A loan of 10,000 is being repaid with 20 non-level annual payments. The interest rate on the loan is an annual effective rate of 6%. The loan was originated 4 years ago. Payments of 500 at the end of the first year, 750 at the end of the second year, 1,000 at the end of the third year and 1,250 at the end of the fourth year have been paid. Calculate the outstanding balance immediately after the fourth payment. Calculate the outstanding balance to the loan in the previous problem one year after the fourth payment immediately before the fifth payment