Finding the Fourth Proportional to 16,287.57, 22,477.32 and 9,117.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,287.57 : 22,477.32 = 9,117.27 : x
2. Step 2: Convert to fraction form
   16,287.57/22,477.32 = 9,117.27/x
3. Step 3: Cross multiply
   16,287.57x = 22,477.32 × 9,117.27
4. Step 4: Simplify right side
   16,287.57x = 204,931,795.32
5. Step 5: Solve for x
   x = 204,931,795.32/16,287.57
6. Step 6: Final answer
   x = 12,582.10