Finding the Fourth Proportional to 3,976.47, 5,487.35 and 2,208.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.47 : 5,487.35 = 2,208.18 : x
2. Step 2: Convert to fraction form
   3,976.47/5,487.35 = 2,208.18/x
3. Step 3: Cross multiply
   3,976.47x = 5,487.35 × 2,208.18
4. Step 4: Simplify right side
   3,976.47x = 12,117,056.52
5. Step 5: Solve for x
   x = 12,117,056.52/3,976.47
6. Step 6: Final answer
   x = 3,047.19