Finding the Fourth Proportional to 5,200.57, 7,174.78 and 3,207.67

Step by Step Solution

1. Step 1: Write the proportion equation
   5,200.57 : 7,174.78 = 3,207.67 : x
2. Step 2: Convert to fraction form
   5,200.57/7,174.78 = 3,207.67/x
3. Step 3: Cross multiply
   5,200.57x = 7,174.78 × 3,207.67
4. Step 4: Simplify right side
   5,200.57x = 23,014,300.61
5. Step 5: Solve for x
   x = 23,014,300.61/5,200.57
6. Step 6: Final answer
   x = 4,425.34