Finding the Fourth Proportional to 22,686.45, 31,304.91 and 12,613.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,686.45 : 31,304.91 = 12,613.27 : x
2. Step 2: Convert to fraction form
   22,686.45/31,304.91 = 12,613.27/x
3. Step 3: Cross multiply
   22,686.45x = 31,304.91 × 12,613.27
4. Step 4: Simplify right side
   22,686.45x = 394,857,282.16
5. Step 5: Solve for x
   x = 394,857,282.16/22,686.45
6. Step 6: Final answer
   x = 17,404.99