Finding the Fourth Proportional to 12,728.40, 17,566.17 and 7,352.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,728.40 : 17,566.17 = 7,352.46 : x
2. Step 2: Convert to fraction form
   12,728.40/17,566.17 = 7,352.46/x
3. Step 3: Cross multiply
   12,728.40x = 17,566.17 × 7,352.46
4. Step 4: Simplify right side
   12,728.40x = 129,154,562.28
5. Step 5: Solve for x
   x = 129,154,562.28/12,728.40
6. Step 6: Final answer
   x = 10,146.96