Finding the Fourth Proportional to 6,768.72, 9,342.82 and 3,936.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,768.72 : 9,342.82 = 3,936.76 : x
2. Step 2: Convert to fraction form
   6,768.72/9,342.82 = 3,936.76/x
3. Step 3: Cross multiply
   6,768.72x = 9,342.82 × 3,936.76
4. Step 4: Simplify right side
   6,768.72x = 36,780,440.06
5. Step 5: Solve for x
   x = 36,780,440.06/6,768.72
6. Step 6: Final answer
   x = 5,433.88