Finding the Fourth Proportional to 13,413.86, 18,510.98 and 7,445.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,413.86 : 18,510.98 = 7,445.37 : x
2. Step 2: Convert to fraction form
   13,413.86/18,510.98 = 7,445.37/x
3. Step 3: Cross multiply
   13,413.86x = 18,510.98 × 7,445.37
4. Step 4: Simplify right side
   13,413.86x = 137,821,113.78
5. Step 5: Solve for x
   x = 137,821,113.78/13,413.86
6. Step 6: Final answer
   x = 10,274.53