Finding the Fourth Proportional to 10,987.41, 16,481.87 and 4,413.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.41 : 16,481.87 = 4,413.59 : x
2. Step 2: Convert to fraction form
   10,987.41/16,481.87 = 4,413.59/x
3. Step 3: Cross multiply
   10,987.41x = 16,481.87 × 4,413.59
4. Step 4: Simplify right side
   10,987.41x = 72,744,216.61
5. Step 5: Solve for x
   x = 72,744,216.61/10,987.41
6. Step 6: Final answer
   x = 6,620.69