Finding the Fourth Proportional to 5,702.75, 7,870.59 and 3,185.03

Step by Step Solution

1. Step 1: Write the proportion equation
   5,702.75 : 7,870.59 = 3,185.03 : x
2. Step 2: Convert to fraction form
   5,702.75/7,870.59 = 3,185.03/x
3. Step 3: Cross multiply
   5,702.75x = 7,870.59 × 3,185.03
4. Step 4: Simplify right side
   5,702.75x = 25,068,025.91
5. Step 5: Solve for x
   x = 25,068,025.91/5,702.75
6. Step 6: Final answer
   x = 4,395.78