Finding the Fourth Proportional to 5,213.57, 7,194.72 and 2,855.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,213.57 : 7,194.72 = 2,855.72 : x
2. Step 2: Convert to fraction form
   5,213.57/7,194.72 = 2,855.72/x
3. Step 3: Cross multiply
   5,213.57x = 7,194.72 × 2,855.72
4. Step 4: Simplify right side
   5,213.57x = 20,546,105.80
5. Step 5: Solve for x
   x = 20,546,105.80/5,213.57
6. Step 6: Final answer
   x = 3,940.89