Finding the Fourth Proportional to 22,176.61, 30,604.01 and 13,229.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,176.61 : 30,604.01 = 13,229.28 : x
2. Step 2: Convert to fraction form
   22,176.61/30,604.01 = 13,229.28/x
3. Step 3: Cross multiply
   22,176.61x = 30,604.01 × 13,229.28
4. Step 4: Simplify right side
   22,176.61x = 404,868,951.27
5. Step 5: Solve for x
   x = 404,868,951.27/22,176.61
6. Step 6: Final answer
   x = 18,256.58