Finding the Fourth Proportional to 5,085.23, 7,017.29 and 2,847.09

Step by Step Solution

1. Step 1: Write the proportion equation
   5,085.23 : 7,017.29 = 2,847.09 : x
2. Step 2: Convert to fraction form
   5,085.23/7,017.29 = 2,847.09/x
3. Step 3: Cross multiply
   5,085.23x = 7,017.29 × 2,847.09
4. Step 4: Simplify right side
   5,085.23x = 19,978,856.19
5. Step 5: Solve for x
   x = 19,978,856.19/5,085.23
6. Step 6: Final answer
   x = 3,928.80