Finding the Fourth Proportional to 7,310.72, 10,986.60 and 5,016.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,310.72 : 10,986.60 = 5,016.80 : x
2. Step 2: Convert to fraction form
   7,310.72/10,986.60 = 5,016.80/x
3. Step 3: Cross multiply
   7,310.72x = 10,986.60 × 5,016.80
4. Step 4: Simplify right side
   7,310.72x = 55,117,574.88
5. Step 5: Solve for x
   x = 55,117,574.88/7,310.72
6. Step 6: Final answer
   x = 7,539.28