The debt is amortized by equal payments made at the end of each payment interval Compute (a) the size of the periodic payments; (b) the outstanding principal at the time indicated; (c) the interest paid by the payment following the time indicated; and (d) the principal repaid by the payment following the time indicated for finding the outstanding principal Repayment Payment Conversion Outstanding Debt Principal Interest Rate Period Interval Period Principal After: $15,000 7 years 3 months 12% quarterly 6th payment (a) The size of the periodic payment is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) (b) The outstanding principal after the 6th payment is s (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) (c) The interest paid by the 7th payment is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) (d) The principal repaid by the 7th payment is (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)