Finding the Fourth Proportional to 16,776.50, 23,151.58 and 9,223.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,776.50 : 23,151.58 = 9,223.31 : x
2. Step 2: Convert to fraction form
   16,776.50/23,151.58 = 9,223.31/x
3. Step 3: Cross multiply
   16,776.50x = 23,151.58 × 9,223.31
4. Step 4: Simplify right side
   16,776.50x = 213,534,234.15
5. Step 5: Solve for x
   x = 213,534,234.15/16,776.50
6. Step 6: Final answer
   x = 12,728.18