Finding the Fourth Proportional to 8,928.58, 12,314.89 and 6,413.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,928.58 : 12,314.89 = 6,413.27 : x
2. Step 2: Convert to fraction form
   8,928.58/12,314.89 = 6,413.27/x
3. Step 3: Cross multiply
   8,928.58x = 12,314.89 × 6,413.27
4. Step 4: Simplify right side
   8,928.58x = 78,978,682.52
5. Step 5: Solve for x
   x = 78,978,682.52/8,928.58
6. Step 6: Final answer
   x = 8,845.61