Finding the Fourth Proportional to 22,380.42, 33,540.38 and 8,521.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,380.42 : 33,540.38 = 8,521.86 : x
2. Step 2: Convert to fraction form
   22,380.42/33,540.38 = 8,521.86/x
3. Step 3: Cross multiply
   22,380.42x = 33,540.38 × 8,521.86
4. Step 4: Simplify right side
   22,380.42x = 285,826,276.31
5. Step 5: Solve for x
   x = 285,826,276.31/22,380.42
6. Step 6: Final answer
   x = 12,771.27