Finding the Fourth Proportional to 5,171.30, 7,136.37 and 2,813.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,171.30 : 7,136.37 = 2,813.42 : x
2. Step 2: Convert to fraction form
   5,171.30/7,136.37 = 2,813.42/x
3. Step 3: Cross multiply
   5,171.30x = 7,136.37 × 2,813.42
4. Step 4: Simplify right side
   5,171.30x = 20,077,606.09
5. Step 5: Solve for x
   x = 20,077,606.09/5,171.30
6. Step 6: Final answer
   x = 3,882.51