Finding the Fourth Proportional to 25,268.96, 34,871.31 and 13,938.78

Step by Step Solution

1. Step 1: Write the proportion equation
   25,268.96 : 34,871.31 = 13,938.78 : x
2. Step 2: Convert to fraction form
   25,268.96/34,871.31 = 13,938.78/x
3. Step 3: Cross multiply
   25,268.96x = 34,871.31 × 13,938.78
4. Step 4: Simplify right side
   25,268.96x = 486,063,649.17
5. Step 5: Solve for x
   x = 486,063,649.17/25,268.96
6. Step 6: Final answer
   x = 19,235.60