Finding the Fourth Proportional to 16,287.93, 22,478.43 and 9,118.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,287.93 : 22,478.43 = 9,118.49 : x
2. Step 2: Convert to fraction form
   16,287.93/22,478.43 = 9,118.49/x
3. Step 3: Cross multiply
   16,287.93x = 22,478.43 × 9,118.49
4. Step 4: Simplify right side
   16,287.93x = 204,969,226.78
5. Step 5: Solve for x
   x = 204,969,226.78/16,287.93
6. Step 6: Final answer
   x = 12,584.12