Finding the Fourth Proportional to 12,413.80, 18,619.42 and 5,022.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,413.80 : 18,619.42 = 5,022.12 : x
2. Step 2: Convert to fraction form
   12,413.80/18,619.42 = 5,022.12/x
3. Step 3: Cross multiply
   12,413.80x = 18,619.42 × 5,022.12
4. Step 4: Simplify right side
   12,413.80x = 93,508,961.57
5. Step 5: Solve for x
   x = 93,508,961.57/12,413.80
6. Step 6: Final answer
   x = 7,532.66