Finding the Fourth Proportional to 9,597.51, 13,239.25 and 7,990.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,597.51 : 13,239.25 = 7,990.51 : x
2. Step 2: Convert to fraction form
   9,597.51/13,239.25 = 7,990.51/x
3. Step 3: Cross multiply
   9,597.51x = 13,239.25 × 7,990.51
4. Step 4: Simplify right side
   9,597.51x = 105,788,359.52
5. Step 5: Solve for x
   x = 105,788,359.52/9,597.51
6. Step 6: Final answer
   x = 11,022.48