Finding the Fourth Proportional to 12,866.43, 17,753.15 and 7,201.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,866.43 : 17,753.15 = 7,201.43 : x
2. Step 2: Convert to fraction form
   12,866.43/17,753.15 = 7,201.43/x
3. Step 3: Cross multiply
   12,866.43x = 17,753.15 × 7,201.43
4. Step 4: Simplify right side
   12,866.43x = 127,847,978.24
5. Step 5: Solve for x
   x = 127,847,978.24/12,866.43
6. Step 6: Final answer
   x = 9,936.55