Finding the Fourth Proportional to 5,140.36, 7,086.42 and 3,647.73

Step by Step Solution

1. Step 1: Write the proportion equation
   5,140.36 : 7,086.42 = 3,647.73 : x
2. Step 2: Convert to fraction form
   5,140.36/7,086.42 = 3,647.73/x
3. Step 3: Cross multiply
   5,140.36x = 7,086.42 × 3,647.73
4. Step 4: Simplify right side
   5,140.36x = 25,849,328.59
5. Step 5: Solve for x
   x = 25,849,328.59/5,140.36
6. Step 6: Final answer
   x = 5,028.70