Finding the Fourth Proportional to 25,117.72, 34,661.10 and 13,939

Step by Step Solution

1. Step 1: Write the proportion equation
   25,117.72 : 34,661.10 = 13,939 : x
2. Step 2: Convert to fraction form
   25,117.72/34,661.10 = 13,939/x
3. Step 3: Cross multiply
   25,117.72x = 34,661.10 × 13,939
4. Step 4: Simplify right side
   25,117.72x = 483,141,072.90
5. Step 5: Solve for x
   x = 483,141,072.90/25,117.72
6. Step 6: Final answer
   x = 19,235.07