Finding the Fourth Proportional to 3,980.48, 5,493.06 and 2,212.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.48 : 5,493.06 = 2,212.12 : x
2. Step 2: Convert to fraction form
   3,980.48/5,493.06 = 2,212.12/x
3. Step 3: Cross multiply
   3,980.48x = 5,493.06 × 2,212.12
4. Step 4: Simplify right side
   3,980.48x = 12,151,307.89
5. Step 5: Solve for x
   x = 12,151,307.89/3,980.48
6. Step 6: Final answer
   x = 3,052.72