Finding the Fourth Proportional to 22,178.70, 30,605.82 and 13,224.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,178.70 : 30,605.82 = 13,224.12 : x
2. Step 2: Convert to fraction form
   22,178.70/30,605.82 = 13,224.12/x
3. Step 3: Cross multiply
   22,178.70x = 30,605.82 × 13,224.12
4. Step 4: Simplify right side
   22,178.70x = 404,735,036.38
5. Step 5: Solve for x
   x = 404,735,036.38/22,178.70
6. Step 6: Final answer
   x = 18,248.82