Finding the Fourth Proportional to 6,868.32, 9,478.29 and 3,724.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,868.32 : 9,478.29 = 3,724.50 : x
2. Step 2: Convert to fraction form
   6,868.32/9,478.29 = 3,724.50/x
3. Step 3: Cross multiply
   6,868.32x = 9,478.29 × 3,724.50
4. Step 4: Simplify right side
   6,868.32x = 35,301,891.11
5. Step 5: Solve for x
   x = 35,301,891.11/6,868.32
6. Step 6: Final answer
   x = 5,139.81