Finding the Fourth Proportional to 31,781.96, 43,858.91 and 18,354.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,781.96 : 43,858.91 = 18,354.38 : x
2. Step 2: Convert to fraction form
   31,781.96/43,858.91 = 18,354.38/x
3. Step 3: Cross multiply
   31,781.96x = 43,858.91 × 18,354.38
4. Step 4: Simplify right side
   31,781.96x = 805,002,789.46
5. Step 5: Solve for x
   x = 805,002,789.46/31,781.96
6. Step 6: Final answer
   x = 25,328.93