Wrongful death — Automobile accident — Tractor-trailer accident involving multiple vehicles and resulting in several bodily injury and wrongful death claims — Intervention — Excess insurer for employer of driver who recklessly operated tractor-trailer seeking to intervene for purpose of distributing $10, which it contends is the extent of available insurance coverage after settlement of other claims — Trial court applied proper standard when it examined whether excess insurer’s asserted interest was appropriate for intervention and did not abuse discretion by denying intervention after concluding that it was not — Excess insurer’s interest in distributing its remaining insurance proceeds was not appropriate to support intervention because it was not an interest in the matter of litigation and was not of such a direct and immediate character that insurer would gain or lose by the direct operation of the judgment — Record makes it clear that it is only the continuation of the proceeding that affects insurer because it is paying for insured’s defense pursuant to terms of policy — Discussion of two-step analysis applicable when ruling on motion to intervene