Finding the Fourth Proportional to 22,079.25, 30,470.72 and 12,520.04

Step by Step Solution

1. Step 1: Write the proportion equation
   22,079.25 : 30,470.72 = 12,520.04 : x
2. Step 2: Convert to fraction form
   22,079.25/30,470.72 = 12,520.04/x
3. Step 3: Cross multiply
   22,079.25x = 30,470.72 × 12,520.04
4. Step 4: Simplify right side
   22,079.25x = 381,494,418.28
5. Step 5: Solve for x
   x = 381,494,418.28/22,079.25
6. Step 6: Final answer
   x = 17,278.41