Finding the Fourth Proportional to 22,291.43, 30,762.05 and 12,220.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,291.43 : 30,762.05 = 12,220.29 : x
2. Step 2: Convert to fraction form
   22,291.43/30,762.05 = 12,220.29/x
3. Step 3: Cross multiply
   22,291.43x = 30,762.05 × 12,220.29
4. Step 4: Simplify right side
   22,291.43x = 375,921,110.89
5. Step 5: Solve for x
   x = 375,921,110.89/22,291.43
6. Step 6: Final answer
   x = 16,863.93