Finding the Fourth Proportional to 25,419.46, 38,134.28 and 8,780.10

Step by Step Solution

1. Step 1: Write the proportion equation
   25,419.46 : 38,134.28 = 8,780.10 : x
2. Step 2: Convert to fraction form
   25,419.46/38,134.28 = 8,780.10/x
3. Step 3: Cross multiply
   25,419.46x = 38,134.28 × 8,780.10
4. Step 4: Simplify right side
   25,419.46x = 334,822,791.83
5. Step 5: Solve for x
   x = 334,822,791.83/25,419.46
6. Step 6: Final answer
   x = 13,171.91