Finding the Fourth Proportional to 10,680.50, 14,739.09 and 5,964.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,680.50 : 14,739.09 = 5,964.78 : x
2. Step 2: Convert to fraction form
   10,680.50/14,739.09 = 5,964.78/x
3. Step 3: Cross multiply
   10,680.50x = 14,739.09 × 5,964.78
4. Step 4: Simplify right side
   10,680.50x = 87,915,429.25
5. Step 5: Solve for x
   x = 87,915,429.25/10,680.50
6. Step 6: Final answer
   x = 8,231.40