Finding the Fourth Proportional to 6,440.50, 8,887.89 and 3,923.02

Step by Step Solution

1. Step 1: Write the proportion equation
   6,440.50 : 8,887.89 = 3,923.02 : x
2. Step 2: Convert to fraction form
   6,440.50/8,887.89 = 3,923.02/x
3. Step 3: Cross multiply
   6,440.50x = 8,887.89 × 3,923.02
4. Step 4: Simplify right side
   6,440.50x = 34,867,370.23
5. Step 5: Solve for x
   x = 34,867,370.23/6,440.50
6. Step 6: Final answer
   x = 5,413.77