Finding the Fourth Proportional to 22,417.38, 30,934.17 and 12,857.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,417.38 : 30,934.17 = 12,857.22 : x
2. Step 2: Convert to fraction form
   22,417.38/30,934.17 = 12,857.22/x
3. Step 3: Cross multiply
   22,417.38x = 30,934.17 × 12,857.22
4. Step 4: Simplify right side
   22,417.38x = 397,727,429.21
5. Step 5: Solve for x
   x = 397,727,429.21/22,417.38
6. Step 6: Final answer
   x = 17,741.92