Finding the Fourth Proportional to 6,923.76, 9,553.56 and 3,939.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,923.76 : 9,553.56 = 3,939.12 : x
2. Step 2: Convert to fraction form
   6,923.76/9,553.56 = 3,939.12/x
3. Step 3: Cross multiply
   6,923.76x = 9,553.56 × 3,939.12
4. Step 4: Simplify right side
   6,923.76x = 37,632,619.27
5. Step 5: Solve for x
   x = 37,632,619.27/6,923.76
6. Step 6: Final answer
   x = 5,435.29