Finding the Fourth Proportional to 5,085.45, 7,017.12 and 2,847.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,085.45 : 7,017.12 = 2,847.42 : x
2. Step 2: Convert to fraction form
   5,085.45/7,017.12 = 2,847.42/x
3. Step 3: Cross multiply
   5,085.45x = 7,017.12 × 2,847.42
4. Step 4: Simplify right side
   5,085.45x = 19,980,687.83
5. Step 5: Solve for x
   x = 19,980,687.83/5,085.45
6. Step 6: Final answer
   x = 3,928.99