Finding the Fourth Proportional to 7,086.72, 9,793.16 and 5,315.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,086.72 : 9,793.16 = 5,315.25 : x
2. Step 2: Convert to fraction form
   7,086.72/9,793.16 = 5,315.25/x
3. Step 3: Cross multiply
   7,086.72x = 9,793.16 × 5,315.25
4. Step 4: Simplify right side
   7,086.72x = 52,053,018.15
5. Step 5: Solve for x
   x = 52,053,018.15/7,086.72
6. Step 6: Final answer
   x = 7,345.15