Finding the Fourth Proportional to 12,800.87, 17,665.12 and 7,494.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,800.87 : 17,665.12 = 7,494.62 : x
2. Step 2: Convert to fraction form
   12,800.87/17,665.12 = 7,494.62/x
3. Step 3: Cross multiply
   12,800.87x = 17,665.12 × 7,494.62
4. Step 4: Simplify right side
   12,800.87x = 132,393,254.59
5. Step 5: Solve for x
   x = 132,393,254.59/12,800.87
6. Step 6: Final answer
   x = 10,342.52