Finding the Fourth Proportional to 5,851.72, 8,072.55 and 4,255.90

Step by Step Solution

1. Step 1: Write the proportion equation
   5,851.72 : 8,072.55 = 4,255.90 : x
2. Step 2: Convert to fraction form
   5,851.72/8,072.55 = 4,255.90/x
3. Step 3: Cross multiply
   5,851.72x = 8,072.55 × 4,255.90
4. Step 4: Simplify right side
   5,851.72x = 34,355,965.55
5. Step 5: Solve for x
   x = 34,355,965.55/5,851.72
6. Step 6: Final answer
   x = 5,871.09