Finding the Fourth Proportional to 3,980.54, 5,493.17 and 2,212.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.54 : 5,493.17 = 2,212.17 : x
2. Step 2: Convert to fraction form
   3,980.54/5,493.17 = 2,212.17/x
3. Step 3: Cross multiply
   3,980.54x = 5,493.17 × 2,212.17
4. Step 4: Simplify right side
   3,980.54x = 12,151,825.88
5. Step 5: Solve for x
   x = 12,151,825.88/3,980.54
6. Step 6: Final answer
   x = 3,052.81