Finding the Fourth Proportional to 12,801.24, 17,665.90 and 7,135.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,801.24 : 17,665.90 = 7,135.82 : x
2. Step 2: Convert to fraction form
   12,801.24/17,665.90 = 7,135.82/x
3. Step 3: Cross multiply
   12,801.24x = 17,665.90 × 7,135.82
4. Step 4: Simplify right side
   12,801.24x = 126,060,682.54
5. Step 5: Solve for x
   x = 126,060,682.54/12,801.24
6. Step 6: Final answer
   x = 9,847.54