Finding the Fourth Proportional to 3,980.54, 5,493.29 and 2,212.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.54 : 5,493.29 = 2,212.30 : x
2. Step 2: Convert to fraction form
   3,980.54/5,493.29 = 2,212.30/x
3. Step 3: Cross multiply
   3,980.54x = 5,493.29 × 2,212.30
4. Step 4: Simplify right side
   3,980.54x = 12,152,805.47
5. Step 5: Solve for x
   x = 12,152,805.47/3,980.54
6. Step 6: Final answer
   x = 3,053.05