Finding the Fourth Proportional to 5,707.50, 7,876.52 and 3,189.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,707.50 : 7,876.52 = 3,189.72 : x
2. Step 2: Convert to fraction form
   5,707.50/7,876.52 = 3,189.72/x
3. Step 3: Cross multiply
   5,707.50x = 7,876.52 × 3,189.72
4. Step 4: Simplify right side
   5,707.50x = 25,123,893.37
5. Step 5: Solve for x
   x = 25,123,893.37/5,707.50
6. Step 6: Final answer
   x = 4,401.91