Finding the Fourth Proportional to 6,113.31, 8,433.15 and 3,871.23

Step by Step Solution

1. Step 1: Write the proportion equation
   6,113.31 : 8,433.15 = 3,871.23 : x
2. Step 2: Convert to fraction form
   6,113.31/8,433.15 = 3,871.23/x
3. Step 3: Cross multiply
   6,113.31x = 8,433.15 × 3,871.23
4. Step 4: Simplify right side
   6,113.31x = 32,646,663.27
5. Step 5: Solve for x
   x = 32,646,663.27/6,113.31
6. Step 6: Final answer
   x = 5,340.26