Finding the Fourth Proportional to 22,040.08, 30,414.89 and 12,479.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,040.08 : 30,414.89 = 12,479.25 : x
2. Step 2: Convert to fraction form
   22,040.08/30,414.89 = 12,479.25/x
3. Step 3: Cross multiply
   22,040.08x = 30,414.89 × 12,479.25
4. Step 4: Simplify right side
   22,040.08x = 379,554,839.58
5. Step 5: Solve for x
   x = 379,554,839.58/22,040.08
6. Step 6: Final answer
   x = 17,221.12