Finding the Fourth Proportional to 12,793.20, 17,650.87 and 7,487.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,793.20 : 17,650.87 = 7,487.02 : x
2. Step 2: Convert to fraction form
   12,793.20/17,650.87 = 7,487.02/x
3. Step 3: Cross multiply
   12,793.20x = 17,650.87 × 7,487.02
4. Step 4: Simplify right side
   12,793.20x = 132,152,416.71
5. Step 5: Solve for x
   x = 132,152,416.71/12,793.20
6. Step 6: Final answer
   x = 10,329.90