Finding the Fourth Proportional to 16,360.72, 22,578.96 and 9,287.61

Step by Step Solution

1. Step 1: Write the proportion equation
   16,360.72 : 22,578.96 = 9,287.61 : x
2. Step 2: Convert to fraction form
   16,360.72/22,578.96 = 9,287.61/x
3. Step 3: Cross multiply
   16,360.72x = 22,578.96 × 9,287.61
4. Step 4: Simplify right side
   16,360.72x = 209,704,574.69
5. Step 5: Solve for x
   x = 209,704,574.69/16,360.72
6. Step 6: Final answer
   x = 12,817.56