Finding the Fourth Proportional to 5,471.91, 8,211.83 and 2,185.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,471.91 : 8,211.83 = 2,185.94 : x
2. Step 2: Convert to fraction form
   5,471.91/8,211.83 = 2,185.94/x
3. Step 3: Cross multiply
   5,471.91x = 8,211.83 × 2,185.94
4. Step 4: Simplify right side
   5,471.91x = 17,950,577.27
5. Step 5: Solve for x
   x = 17,950,577.27/5,471.91
6. Step 6: Final answer
   x = 3,280.50