Finding the Fourth Proportional to 22,413.56, 30,929.49 and 12,340.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,413.56 : 30,929.49 = 12,340.09 : x
2. Step 2: Convert to fraction form
   22,413.56/30,929.49 = 12,340.09/x
3. Step 3: Cross multiply
   22,413.56x = 30,929.49 × 12,340.09
4. Step 4: Simplify right side
   22,413.56x = 381,672,690.25
5. Step 5: Solve for x
   x = 381,672,690.25/22,413.56
6. Step 6: Final answer
   x = 17,028.65