Finding the Fourth Proportional to 6,812.76, 9,399.42 and 4,017.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,812.76 : 9,399.42 = 4,017.72 : x
2. Step 2: Convert to fraction form
   6,812.76/9,399.42 = 4,017.72/x
3. Step 3: Cross multiply
   6,812.76x = 9,399.42 × 4,017.72
4. Step 4: Simplify right side
   6,812.76x = 37,764,237.72
5. Step 5: Solve for x
   x = 37,764,237.72/6,812.76
6. Step 6: Final answer
   x = 5,543.16