Finding the Fourth Proportional to 16,822.78, 23,215.99 and 9,269.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,822.78 : 23,215.99 = 9,269.42 : x
2. Step 2: Convert to fraction form
   16,822.78/23,215.99 = 9,269.42/x
3. Step 3: Cross multiply
   16,822.78x = 23,215.99 × 9,269.42
4. Step 4: Simplify right side
   16,822.78x = 215,198,762.03
5. Step 5: Solve for x
   x = 215,198,762.03/16,822.78
6. Step 6: Final answer
   x = 12,792.10