Finding the Fourth Proportional to 6,277.31, 8,662.76 and 3,920.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,277.31 : 8,662.76 = 3,920.82 : x
2. Step 2: Convert to fraction form
   6,277.31/8,662.76 = 3,920.82/x
3. Step 3: Cross multiply
   6,277.31x = 8,662.76 × 3,920.82
4. Step 4: Simplify right side
   6,277.31x = 33,965,103.06
5. Step 5: Solve for x
   x = 33,965,103.06/6,277.31
6. Step 6: Final answer
   x = 5,410.78