Finding the Fourth Proportional to 25,290.29, 34,900.74 and 13,959.61

Step by Step Solution

1. Step 1: Write the proportion equation
   25,290.29 : 34,900.74 = 13,959.61 : x
2. Step 2: Convert to fraction form
   25,290.29/34,900.74 = 13,959.61/x
3. Step 3: Cross multiply
   25,290.29x = 34,900.74 × 13,959.61
4. Step 4: Simplify right side
   25,290.29x = 487,200,631.86
5. Step 5: Solve for x
   x = 487,200,631.86/25,290.29
6. Step 6: Final answer
   x = 19,264.33