Finding the Fourth Proportional to 3,980.88, 5,493.48 and 2,212.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.88 : 5,493.48 = 2,212.38 : x
2. Step 2: Convert to fraction form
   3,980.88/5,493.48 = 2,212.38/x
3. Step 3: Cross multiply
   3,980.88x = 5,493.48 × 2,212.38
4. Step 4: Simplify right side
   3,980.88x = 12,153,665.28
5. Step 5: Solve for x
   x = 12,153,665.28/3,980.88
6. Step 6: Final answer
   x = 3,053.01