Step 1 :This problem involves calculating the present value of an annuity due. The formula for the present value of an annuity due is: \(PV = PMT \times \left[(1 - (1 + r/n)^{nt}) / (r/n)\right] \times (1 + r/n)\), where:
Step 2 :\(PV\) is the present value (the original loan balance we're trying to find)
Step 3 :\(PMT\) is the payment amount per period ($969.94)
Step 4 :\(r\) is the annual interest rate (6.8% or 0.068)
Step 5 :\(n\) is the number of compounding periods per year (4, since payments are made quarterly)
Step 6 :\(t\) is the number of years (5)
Step 7 :We can plug in the given values into this formula to find the original loan balance.
Step 8 :Let's calculate: \(PMT = 969.94\), \(r = 0.068\), \(n = 4\), \(t = 5\)
Step 9 :Substitute these values into the formula, we get \(PV = 16606.402574753323\)
Step 10 :Rounding to the nearest cent, the original loan balance was \(\boxed{16606.40}\)