Finding the Fourth Proportional to 22,622.63, 31,218.17 and 12,550.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,622.63 : 31,218.17 = 12,550.96 : x
2. Step 2: Convert to fraction form
   22,622.63/31,218.17 = 12,550.96/x
3. Step 3: Cross multiply
   22,622.63x = 31,218.17 × 12,550.96
4. Step 4: Simplify right side
   22,622.63x = 391,818,002.94
5. Step 5: Solve for x
   x = 391,818,002.94/22,622.63
6. Step 6: Final answer
   x = 17,319.74