Finding the Fourth Proportional to 6,365.89, 8,784.90 and 3,571.39

Step by Step Solution

1. Step 1: Write the proportion equation
   6,365.89 : 8,784.90 = 3,571.39 : x
2. Step 2: Convert to fraction form
   6,365.89/8,784.90 = 3,571.39/x
3. Step 3: Cross multiply
   6,365.89x = 8,784.90 × 3,571.39
4. Step 4: Simplify right side
   6,365.89x = 31,374,304.01
5. Step 5: Solve for x
   x = 31,374,304.01/6,365.89
6. Step 6: Final answer
   x = 4,928.50