Finding the Fourth Proportional to 3,981.17, 5,493.56 and 2,212.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.17 : 5,493.56 = 2,212.35 : x
2. Step 2: Convert to fraction form
   3,981.17/5,493.56 = 2,212.35/x
3. Step 3: Cross multiply
   3,981.17x = 5,493.56 × 2,212.35
4. Step 4: Simplify right side
   3,981.17x = 12,153,666.40
5. Step 5: Solve for x
   x = 12,153,666.40/3,981.17
6. Step 6: Final answer
   x = 3,052.79