Finding the Fourth Proportional to 3,980.91, 5,493.72 and 2,212.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.91 : 5,493.72 = 2,212.52 : x
2. Step 2: Convert to fraction form
   3,980.91/5,493.72 = 2,212.52/x
3. Step 3: Cross multiply
   3,980.91x = 5,493.72 × 2,212.52
4. Step 4: Simplify right side
   3,980.91x = 12,154,926.84
5. Step 5: Solve for x
   x = 12,154,926.84/3,980.91
6. Step 6: Final answer
   x = 3,053.30