Finding the Fourth Proportional to 22,520.88, 31,079.52 and 12,449.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,520.88 : 31,079.52 = 12,449.64 : x
2. Step 2: Convert to fraction form
   22,520.88/31,079.52 = 12,449.64/x
3. Step 3: Cross multiply
   22,520.88x = 31,079.52 × 12,449.64
4. Step 4: Simplify right side
   22,520.88x = 386,928,835.37
5. Step 5: Solve for x
   x = 386,928,835.37/22,520.88
6. Step 6: Final answer
   x = 17,180.89