Finding the Fourth Proportional to 16,470.23, 22,728.71 and 9,396.77

Step by Step Solution

1. Step 1: Write the proportion equation
   16,470.23 : 22,728.71 = 9,396.77 : x
2. Step 2: Convert to fraction form
   16,470.23/22,728.71 = 9,396.77/x
3. Step 3: Cross multiply
   16,470.23x = 22,728.71 × 9,396.77
4. Step 4: Simplify right side
   16,470.23x = 213,576,413.28
5. Step 5: Solve for x
   x = 213,576,413.28/16,470.23
6. Step 6: Final answer
   x = 12,967.42