Finding the Fourth Proportional to 25,111.43, 34,654.20 and 13,781.97

Step by Step Solution

1. Step 1: Write the proportion equation
   25,111.43 : 34,654.20 = 13,781.97 : x
2. Step 2: Convert to fraction form
   25,111.43/34,654.20 = 13,781.97/x
3. Step 3: Cross multiply
   25,111.43x = 34,654.20 × 13,781.97
4. Step 4: Simplify right side
   25,111.43x = 477,603,144.77
5. Step 5: Solve for x
   x = 477,603,144.77/25,111.43
6. Step 6: Final answer
   x = 19,019.36