Finding the Fourth Proportional to 12,861.52, 17,752.88 and 7,485.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861.52 : 17,752.88 = 7,485.56 : x
2. Step 2: Convert to fraction form
   12,861.52/17,752.88 = 7,485.56/x
3. Step 3: Cross multiply
   12,861.52x = 17,752.88 × 7,485.56
4. Step 4: Simplify right side
   12,861.52x = 132,890,248.41
5. Step 5: Solve for x
   x = 132,890,248.41/12,861.52
6. Step 6: Final answer
   x = 10,332.39