Finding the Fourth Proportional to 3,980.37, 5,493.05 and 2,211.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.37 : 5,493.05 = 2,211.99 : x
2. Step 2: Convert to fraction form
   3,980.37/5,493.05 = 2,211.99/x
3. Step 3: Cross multiply
   3,980.37x = 5,493.05 × 2,211.99
4. Step 4: Simplify right side
   3,980.37x = 12,150,548.31
5. Step 5: Solve for x
   x = 12,150,548.31/3,980.37
6. Step 6: Final answer
   x = 3,052.61