Finding the Fourth Proportional to 3,981.62, 5,494.56 and 2,213.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.62 : 5,494.56 = 2,213.18 : x
2. Step 2: Convert to fraction form
   3,981.62/5,494.56 = 2,213.18/x
3. Step 3: Cross multiply
   3,981.62x = 5,494.56 × 2,213.18
4. Step 4: Simplify right side
   3,981.62x = 12,160,422.83
5. Step 5: Solve for x
   x = 12,160,422.83/3,981.62
6. Step 6: Final answer
   x = 3,054.14