Finding the Fourth Proportional to 22,418.72, 33,630.52 and 8,385.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,418.72 : 33,630.52 = 8,385.48 : x
2. Step 2: Convert to fraction form
   22,418.72/33,630.52 = 8,385.48/x
3. Step 3: Cross multiply
   22,418.72x = 33,630.52 × 8,385.48
4. Step 4: Simplify right side
   22,418.72x = 282,008,052.85
5. Step 5: Solve for x
   x = 282,008,052.85/22,418.72
6. Step 6: Final answer
   x = 12,579.13