Finding the Fourth Proportional to 10,288.50, 14,183.55 and 7,311.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,288.50 : 14,183.55 = 7,311.15 : x
2. Step 2: Convert to fraction form
   10,288.50/14,183.55 = 7,311.15/x
3. Step 3: Cross multiply
   10,288.50x = 14,183.55 × 7,311.15
4. Step 4: Simplify right side
   10,288.50x = 103,698,061.58
5. Step 5: Solve for x
   x = 103,698,061.58/10,288.50
6. Step 6: Final answer
   x = 10,079.03