Finding the Fourth Proportional to 12,861.98, 17,753.12 and 7,485.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,861.98 : 17,753.12 = 7,485.47 : x
2. Step 2: Convert to fraction form
   12,861.98/17,753.12 = 7,485.47/x
3. Step 3: Cross multiply
   12,861.98x = 17,753.12 × 7,485.47
4. Step 4: Simplify right side
   12,861.98x = 132,890,447.17
5. Step 5: Solve for x
   x = 132,890,447.17/12,861.98
6. Step 6: Final answer
   x = 10,332.04