Finding the Fourth Proportional to 6,683.31, 9,221.72 and 3,888.27

Step by Step Solution

1. Step 1: Write the proportion equation
   6,683.31 : 9,221.72 = 3,888.27 : x
2. Step 2: Convert to fraction form
   6,683.31/9,221.72 = 3,888.27/x
3. Step 3: Cross multiply
   6,683.31x = 9,221.72 × 3,888.27
4. Step 4: Simplify right side
   6,683.31x = 35,856,517.78
5. Step 5: Solve for x
   x = 35,856,517.78/6,683.31
6. Step 6: Final answer
   x = 5,365.08