Martha has borrowed $10,000, on which she is making annual interest-only payments at 10% , due on January 1 of each year. She makes annual deposits on January 1 to her savings account, which pays 5.25% , in order to accumulate enough to pay off the loan in ten years. The first payment and deposit are made one year after she borrows the money. Martha has just made the fourth savings deposit and interest payment. She now takes out a new loan, to be paid in six equal annual installments at 8% , the first payment due in one year. Payments for the new loan will equal the sum of her old interest payment plus annual savings deposit. She uses the new loan plus part of her savings account to pay off the original $10,000 loan. Determine how much she has left in her savings account after paying off the original loan.