Finding the Fourth Proportional to 3,981.06, 5,493.78 and 2,212.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.06 : 5,493.78 = 2,212.56 : x
2. Step 2: Convert to fraction form
   3,981.06/5,493.78 = 2,212.56/x
3. Step 3: Cross multiply
   3,981.06x = 5,493.78 × 2,212.56
4. Step 4: Simplify right side
   3,981.06x = 12,155,317.88
5. Step 5: Solve for x
   x = 12,155,317.88/3,981.06
6. Step 6: Final answer
   x = 3,053.29