Finding the Fourth Proportional to 22,079.52, 30,470.81 and 12,648.11

Step by Step Solution

1. Step 1: Write the proportion equation
   22,079.52 : 30,470.81 = 12,648.11 : x
2. Step 2: Convert to fraction form
   22,079.52/30,470.81 = 12,648.11/x
3. Step 3: Cross multiply
   22,079.52x = 30,470.81 × 12,648.11
4. Step 4: Simplify right side
   22,079.52x = 385,397,941.07
5. Step 5: Solve for x
   x = 385,397,941.07/22,079.52
6. Step 6: Final answer
   x = 17,455.00