Finding the Fourth Proportional to 22,142.72, 33,207.60 and 8,288.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,142.72 : 33,207.60 = 8,288.48 : x
2. Step 2: Convert to fraction form
   22,142.72/33,207.60 = 8,288.48/x
3. Step 3: Cross multiply
   22,142.72x = 33,207.60 × 8,288.48
4. Step 4: Simplify right side
   22,142.72x = 275,240,528.45
5. Step 5: Solve for x
   x = 275,240,528.45/22,142.72
6. Step 6: Final answer
   x = 12,430.29