Finding the Fourth Proportional to 22,740.30, 31,382.17 and 12,668.91

Step by Step Solution

1. Step 1: Write the proportion equation
   22,740.30 : 31,382.17 = 12,668.91 : x
2. Step 2: Convert to fraction form
   22,740.30/31,382.17 = 12,668.91/x
3. Step 3: Cross multiply
   22,740.30x = 31,382.17 × 12,668.91
4. Step 4: Simplify right side
   22,740.30x = 397,577,887.33
5. Step 5: Solve for x
   x = 397,577,887.33/22,740.30
6. Step 6: Final answer
   x = 17,483.41