Finding the Fourth Proportional to 5,172.02, 7,137.34 and 2,814.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,172.02 : 7,137.34 = 2,814.15 : x
2. Step 2: Convert to fraction form
   5,172.02/7,137.34 = 2,814.15/x
3. Step 3: Cross multiply
   5,172.02x = 7,137.34 × 2,814.15
4. Step 4: Simplify right side
   5,172.02x = 20,085,545.36
5. Step 5: Solve for x
   x = 20,085,545.36/5,172.02
6. Step 6: Final answer
   x = 3,883.50