Finding the Fourth Proportional to 10,311.18, 15,452.37 and 5,111.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,311.18 : 15,452.37 = 5,111.82 : x
2. Step 2: Convert to fraction form
   10,311.18/15,452.37 = 5,111.82/x
3. Step 3: Cross multiply
   10,311.18x = 15,452.37 × 5,111.82
4. Step 4: Simplify right side
   10,311.18x = 78,989,734.01
5. Step 5: Solve for x
   x = 78,989,734.01/10,311.18
6. Step 6: Final answer
   x = 7,660.59