Finding the Fourth Proportional to 16,288.62, 22,479.17 and 9,118.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,288.62 : 22,479.17 = 9,118.10 : x
2. Step 2: Convert to fraction form
   16,288.62/22,479.17 = 9,118.10/x
3. Step 3: Cross multiply
   16,288.62x = 22,479.17 × 9,118.10
4. Step 4: Simplify right side
   16,288.62x = 204,967,319.98
5. Step 5: Solve for x
   x = 204,967,319.98/16,288.62
6. Step 6: Final answer
   x = 12,583.47