Finding the Fourth Proportional to 22,757.40, 31,404.24 and 12,686.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,757.40 : 31,404.24 = 12,686.94 : x
2. Step 2: Convert to fraction form
   22,757.40/31,404.24 = 12,686.94/x
3. Step 3: Cross multiply
   22,757.40x = 31,404.24 × 12,686.94
4. Step 4: Simplify right side
   22,757.40x = 398,423,708.63
5. Step 5: Solve for x
   x = 398,423,708.63/22,757.40
6. Step 6: Final answer
   x = 17,507.44