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 for finding the outstanding principal; and (d) the principal repaid by the same payment as in part c. Debt Principal Interest Rate Repayment Period 6 years Conversion Period monthly Outstanding Principal After: 4th payment $18,000.00 Payment Interval 3 months 12% (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)