Finding the Fourth Proportional to 5,109.89, 7,052.27 and 2,871.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,109.89 : 7,052.27 = 2,871.86 : x
2. Step 2: Convert to fraction form
   5,109.89/7,052.27 = 2,871.86/x
3. Step 3: Cross multiply
   5,109.89x = 7,052.27 × 2,871.86
4. Step 4: Simplify right side
   5,109.89x = 20,253,082.50
5. Step 5: Solve for x
   x = 20,253,082.50/5,109.89
6. Step 6: Final answer
   x = 3,963.51