Finding the Fourth Proportional to 7,315.67, 10,979.65 and 3,158.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,315.67 : 10,979.65 = 3,158.82 : x
2. Step 2: Convert to fraction form
   7,315.67/10,979.65 = 3,158.82/x
3. Step 3: Cross multiply
   7,315.67x = 10,979.65 × 3,158.82
4. Step 4: Simplify right side
   7,315.67x = 34,682,738.01
5. Step 5: Solve for x
   x = 34,682,738.01/7,315.67
6. Step 6: Final answer
   x = 4,740.88