Finding the Fourth Proportional to 13,413.94, 18,510.60 and 7,445.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,413.94 : 18,510.60 = 7,445.59 : x
2. Step 2: Convert to fraction form
   13,413.94/18,510.60 = 7,445.59/x
3. Step 3: Cross multiply
   13,413.94x = 18,510.60 × 7,445.59
4. Step 4: Simplify right side
   13,413.94x = 137,822,338.25
5. Step 5: Solve for x
   x = 137,822,338.25/13,413.94
6. Step 6: Final answer
   x = 10,274.56