Finding the Fourth Proportional to 12,789.16, 17,649.85 and 7,200.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,789.16 : 17,649.85 = 7,200.52 : x
2. Step 2: Convert to fraction form
   12,789.16/17,649.85 = 7,200.52/x
3. Step 3: Cross multiply
   12,789.16x = 17,649.85 × 7,200.52
4. Step 4: Simplify right side
   12,789.16x = 127,088,035.80
5. Step 5: Solve for x
   x = 127,088,035.80/12,789.16
6. Step 6: Final answer
   x = 9,937.17