Finding the Fourth Proportional to 7,092.25, 9,787.31 and 3,949.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,092.25 : 9,787.31 = 3,949.05 : x
2. Step 2: Convert to fraction form
   7,092.25/9,787.31 = 3,949.05/x
3. Step 3: Cross multiply
   7,092.25x = 9,787.31 × 3,949.05
4. Step 4: Simplify right side
   7,092.25x = 38,650,576.56
5. Step 5: Solve for x
   x = 38,650,576.56/7,092.25
6. Step 6: Final answer
   x = 5,449.69