Finding the Fourth Proportional to 22,738.05, 31,380.82 and 12,668.13

Step by Step Solution

1. Step 1: Write the proportion equation
   22,738.05 : 31,380.82 = 12,668.13 : x
2. Step 2: Convert to fraction form
   22,738.05/31,380.82 = 12,668.13/x
3. Step 3: Cross multiply
   22,738.05x = 31,380.82 × 12,668.13
4. Step 4: Simplify right side
   22,738.05x = 397,536,275.60
5. Step 5: Solve for x
   x = 397,536,275.60/22,738.05
6. Step 6: Final answer
   x = 17,483.31