Finding the Fourth Proportional to 3,981.53, 5,494.71 and 2,213.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.53 : 5,494.71 = 2,213.16 : x
2. Step 2: Convert to fraction form
   3,981.53/5,494.71 = 2,213.16/x
3. Step 3: Cross multiply
   3,981.53x = 5,494.71 × 2,213.16
4. Step 4: Simplify right side
   3,981.53x = 12,160,672.38
5. Step 5: Solve for x
   x = 12,160,672.38/3,981.53
6. Step 6: Final answer
   x = 3,054.28