Finding the Fourth Proportional to 22,413.38, 30,930.46 and 12,477.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,413.38 : 30,930.46 = 12,477.38 : x
2. Step 2: Convert to fraction form
   22,413.38/30,930.46 = 12,477.38/x
3. Step 3: Cross multiply
   22,413.38x = 30,930.46 × 12,477.38
4. Step 4: Simplify right side
   22,413.38x = 385,930,917.15
5. Step 5: Solve for x
   x = 385,930,917.15/22,413.38
6. Step 6: Final answer
   x = 17,218.78