Finding the Fourth Proportional to 7,035.31, 9,708.24 and 3,891.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,035.31 : 9,708.24 = 3,891.25 : x
2. Step 2: Convert to fraction form
   7,035.31/9,708.24 = 3,891.25/x
3. Step 3: Cross multiply
   7,035.31x = 9,708.24 × 3,891.25
4. Step 4: Simplify right side
   7,035.31x = 37,777,188.90
5. Step 5: Solve for x
   x = 37,777,188.90/7,035.31
6. Step 6: Final answer
   x = 5,369.66