Finding the Fourth Proportional to 5,217.89, 7,200.76 and 2,859.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,217.89 : 7,200.76 = 2,859.98 : x
2. Step 2: Convert to fraction form
   5,217.89/7,200.76 = 2,859.98/x
3. Step 3: Cross multiply
   5,217.89x = 7,200.76 × 2,859.98
4. Step 4: Simplify right side
   5,217.89x = 20,594,015.28
5. Step 5: Solve for x
   x = 20,594,015.28/5,217.89
6. Step 6: Final answer
   x = 3,946.81