Finding the Fourth Proportional to 13,413.18, 18,510.06 and 7,444.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,413.18 : 18,510.06 = 7,444.89 : x
2. Step 2: Convert to fraction form
   13,413.18/18,510.06 = 7,444.89/x
3. Step 3: Cross multiply
   13,413.18x = 18,510.06 × 7,444.89
4. Step 4: Simplify right side
   13,413.18x = 137,805,360.59
5. Step 5: Solve for x
   x = 137,805,360.59/13,413.18
6. Step 6: Final answer
   x = 10,273.88