Finding the Fourth Proportional to 25,401.38, 38,105.31 and 7,872.26

Step by Step Solution

1. Step 1: Write the proportion equation
   25,401.38 : 38,105.31 = 7,872.26 : x
2. Step 2: Convert to fraction form
   25,401.38/38,105.31 = 7,872.26/x
3. Step 3: Cross multiply
   25,401.38x = 38,105.31 × 7,872.26
4. Step 4: Simplify right side
   25,401.38x = 299,974,907.70
5. Step 5: Solve for x
   x = 299,974,907.70/25,401.38
6. Step 6: Final answer
   x = 11,809.39