Finding the Fourth Proportional to 12,740.48, 17,581.88 and 7,151.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,740.48 : 17,581.88 = 7,151.52 : x
2. Step 2: Convert to fraction form
   12,740.48/17,581.88 = 7,151.52/x
3. Step 3: Cross multiply
   12,740.48x = 17,581.88 × 7,151.52
4. Step 4: Simplify right side
   12,740.48x = 125,737,166.46
5. Step 5: Solve for x
   x = 125,737,166.46/12,740.48
6. Step 6: Final answer
   x = 9,869.11