Finding the Fourth Proportional to 25,401.88, 38,106.06 and 10,621

Step by Step Solution

1. Step 1: Write the proportion equation
   25,401.88 : 38,106.06 = 10,621 : x
2. Step 2: Convert to fraction form
   25,401.88/38,106.06 = 10,621/x
3. Step 3: Cross multiply
   25,401.88x = 38,106.06 × 10,621
4. Step 4: Simplify right side
   25,401.88x = 404,724,463.26
5. Step 5: Solve for x
   x = 404,724,463.26/25,401.88
6. Step 6: Final answer
   x = 15,932.85