Finding the Fourth Proportional to 16,283.72, 22,472.39 and 9,113.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,283.72 : 22,472.39 = 9,113.20 : x
2. Step 2: Convert to fraction form
   16,283.72/22,472.39 = 9,113.20/x
3. Step 3: Cross multiply
   16,283.72x = 22,472.39 × 9,113.20
4. Step 4: Simplify right side
   16,283.72x = 204,795,351.15
5. Step 5: Solve for x
   x = 204,795,351.15/16,283.72
6. Step 6: Final answer
   x = 12,576.69