Finding the Fourth Proportional to 6,787.72, 9,362.82 and 3,992.68

Step by Step Solution

1. Step 1: Write the proportion equation
   6,787.72 : 9,362.82 = 3,992.68 : x
2. Step 2: Convert to fraction form
   6,787.72/9,362.82 = 3,992.68/x
3. Step 3: Cross multiply
   6,787.72x = 9,362.82 × 3,992.68
4. Step 4: Simplify right side
   6,787.72x = 37,382,744.16
5. Step 5: Solve for x
   x = 37,382,744.16/6,787.72
6. Step 6: Final answer
   x = 5,507.41