Finding the Fourth Proportional to 6,920.72, 9,550.56 and 3,936.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,920.72 : 9,550.56 = 3,936.56 : x
2. Step 2: Convert to fraction form
   6,920.72/9,550.56 = 3,936.56/x
3. Step 3: Cross multiply
   6,920.72x = 9,550.56 × 3,936.56
4. Step 4: Simplify right side
   6,920.72x = 37,596,352.47
5. Step 5: Solve for x
   x = 37,596,352.47/6,920.72
6. Step 6: Final answer
   x = 5,432.43