Finding the Fourth Proportional to 3,981.56, 5,494.61 and 2,213.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.56 : 5,494.61 = 2,213.27 : x
2. Step 2: Convert to fraction form
   3,981.56/5,494.61 = 2,213.27/x
3. Step 3: Cross multiply
   3,981.56x = 5,494.61 × 2,213.27
4. Step 4: Simplify right side
   3,981.56x = 12,161,078.82
5. Step 5: Solve for x
   x = 12,161,078.82/3,981.56
6. Step 6: Final answer
   x = 3,054.35