Finding the Fourth Proportional to 22,413.43, 30,929.32 and 12,339.97

Step by Step Solution

1. Step 1: Write the proportion equation
   22,413.43 : 30,929.32 = 12,339.97 : x
2. Step 2: Convert to fraction form
   22,413.43/30,929.32 = 12,339.97/x
3. Step 3: Cross multiply
   22,413.43x = 30,929.32 × 12,339.97
4. Step 4: Simplify right side
   22,413.43x = 381,666,819.02
5. Step 5: Solve for x
   x = 381,666,819.02/22,413.43
6. Step 6: Final answer
   x = 17,028.49