Finding the Fourth Proportional to 4,227.72, 6,311.91 and 3,813

Step by Step Solution

1. Step 1: Write the proportion equation
   4,227.72 : 6,311.91 = 3,813 : x
2. Step 2: Convert to fraction form
   4,227.72/6,311.91 = 3,813/x
3. Step 3: Cross multiply
   4,227.72x = 6,311.91 × 3,813
4. Step 4: Simplify right side
   4,227.72x = 24,067,312.83
5. Step 5: Solve for x
   x = 24,067,312.83/4,227.72
6. Step 6: Final answer
   x = 5,692.74