Finding the Fourth Proportional to 12,591.48, 17,336.52 and 9,597.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,591.48 : 17,336.52 = 9,597.72 : x
2. Step 2: Convert to fraction form
   12,591.48/17,336.52 = 9,597.72/x
3. Step 3: Cross multiply
   12,591.48x = 17,336.52 × 9,597.72
4. Step 4: Simplify right side
   12,591.48x = 166,391,064.73
5. Step 5: Solve for x
   x = 166,391,064.73/12,591.48
6. Step 6: Final answer
   x = 13,214.58