Finding the Fourth Proportional to 12,413.10, 17,124.37 and 10,998.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,413.10 : 17,124.37 = 10,998.23 : x
2. Step 2: Convert to fraction form
   12,413.10/17,124.37 = 10,998.23/x
3. Step 3: Cross multiply
   12,413.10x = 17,124.37 × 10,998.23
4. Step 4: Simplify right side
   12,413.10x = 188,337,759.87
5. Step 5: Solve for x
   x = 188,337,759.87/12,413.10
6. Step 6: Final answer
   x = 15,172.50