Finding the Fourth Proportional to 31,469.72, 43,426.53 and 18,040.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,469.72 : 43,426.53 = 18,040.32 : x
2. Step 2: Convert to fraction form
   31,469.72/43,426.53 = 18,040.32/x
3. Step 3: Cross multiply
   31,469.72x = 43,426.53 × 18,040.32
4. Step 4: Simplify right side
   31,469.72x = 783,428,497.69
5. Step 5: Solve for x
   x = 783,428,497.69/31,469.72
6. Step 6: Final answer
   x = 24,894.68