Finding the Fourth Proportional to 5,085.24, 7,016.82 and 2,847.21

Step by Step Solution

1. Step 1: Write the proportion equation
   5,085.24 : 7,016.82 = 2,847.21 : x
2. Step 2: Convert to fraction form
   5,085.24/7,016.82 = 2,847.21/x
3. Step 3: Cross multiply
   5,085.24x = 7,016.82 × 2,847.21
4. Step 4: Simplify right side
   5,085.24x = 19,978,360.07
5. Step 5: Solve for x
   x = 19,978,360.07/5,085.24
6. Step 6: Final answer
   x = 3,928.70