Finding the Fourth Proportional to 5,196.12, 7,170.82 and 2,958.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.12 : 7,170.82 = 2,958.20 : x
2. Step 2: Convert to fraction form
   5,196.12/7,170.82 = 2,958.20/x
3. Step 3: Cross multiply
   5,196.12x = 7,170.82 × 2,958.20
4. Step 4: Simplify right side
   5,196.12x = 21,212,719.72
5. Step 5: Solve for x
   x = 21,212,719.72/5,196.12
6. Step 6: Final answer
   x = 4,082.42