Finding the Fourth Proportional to 5,196.21, 7,170.42 and 2,958.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.21 : 7,170.42 = 2,958.31 : x
2. Step 2: Convert to fraction form
   5,196.21/7,170.42 = 2,958.31/x
3. Step 3: Cross multiply
   5,196.21x = 7,170.42 × 2,958.31
4. Step 4: Simplify right side
   5,196.21x = 21,212,325.19
5. Step 5: Solve for x
   x = 21,212,325.19/5,196.21
6. Step 6: Final answer
   x = 4,082.27