Finding the Fourth Proportional to 22,178.39, 30,605.10 and 12,617.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,178.39 : 30,605.10 = 12,617.38 : x
2. Step 2: Convert to fraction form
   22,178.39/30,605.10 = 12,617.38/x
3. Step 3: Cross multiply
   22,178.39x = 30,605.10 × 12,617.38
4. Step 4: Simplify right side
   22,178.39x = 386,156,023.61
5. Step 5: Solve for x
   x = 386,156,023.61/22,178.39
6. Step 6: Final answer
   x = 17,411.37