Finding the Fourth Proportional to 22,380.17, 33,540.01 and 8,521.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,380.17 : 33,540.01 = 8,521.61 : x
2. Step 2: Convert to fraction form
   22,380.17/33,540.01 = 8,521.61/x
3. Step 3: Cross multiply
   22,380.17x = 33,540.01 × 8,521.61
4. Step 4: Simplify right side
   22,380.17x = 285,814,695.61
5. Step 5: Solve for x
   x = 285,814,695.61/22,380.17
6. Step 6: Final answer
   x = 12,770.89