Finding the Fourth Proportional to 3,976.56, 5,487.74 and 2,208.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.56 : 5,487.74 = 2,208.12 : x
2. Step 2: Convert to fraction form
   3,976.56/5,487.74 = 2,208.12/x
3. Step 3: Cross multiply
   3,976.56x = 5,487.74 × 2,208.12
4. Step 4: Simplify right side
   3,976.56x = 12,117,588.45
5. Step 5: Solve for x
   x = 12,117,588.45/3,976.56
6. Step 6: Final answer
   x = 3,047.25