Finding the Fourth Proportional to 6,723.50, 9,278.31 and 3,739.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,723.50 : 9,278.31 = 3,739.31 : x
2. Step 2: Convert to fraction form
   6,723.50/9,278.31 = 3,739.31/x
3. Step 3: Cross multiply
   6,723.50x = 9,278.31 × 3,739.31
4. Step 4: Simplify right side
   6,723.50x = 34,694,477.37
5. Step 5: Solve for x
   x = 34,694,477.37/6,723.50
6. Step 6: Final answer
   x = 5,160.18