Finding the Fourth Proportional to 25,116.72, 34,659.72 and 13,938

Step by Step Solution

1. Step 1: Write the proportion equation
   25,116.72 : 34,659.72 = 13,938 : x
2. Step 2: Convert to fraction form
   25,116.72/34,659.72 = 13,938/x
3. Step 3: Cross multiply
   25,116.72x = 34,659.72 × 13,938
4. Step 4: Simplify right side
   25,116.72x = 483,087,177.36
5. Step 5: Solve for x
   x = 483,087,177.36/25,116.72
6. Step 6: Final answer
   x = 19,233.69