4-38 Deposits to accumulate future sums For each of the cases shown in the follow- ing table, determine the amount of the equal annual end-of-year deposits neces- sary to accumulate the given sum at the end of the specified period, assuming the stated annual interest rate. Sum to be Accumulation Case accumulated period (years) Interest rate A $ 5,000 12% 100,000 20 30,000 10 15,000 12