Finding the Fourth Proportional to 13,413.67, 18,510.52 and 7,445.19

Step by Step Solution

1. Step 1: Write the proportion equation
   13,413.67 : 18,510.52 = 7,445.19 : x
2. Step 2: Convert to fraction form
   13,413.67/18,510.52 = 7,445.19/x
3. Step 3: Cross multiply
   13,413.67x = 18,510.52 × 7,445.19
4. Step 4: Simplify right side
   13,413.67x = 137,814,301.17
5. Step 5: Solve for x
   x = 137,814,301.17/13,413.67
6. Step 6: Final answer
   x = 10,274.17