Finding the Fourth Proportional to 3,984.71, 5,498.82 and 2,216.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.71 : 5,498.82 = 2,216.28 : x
2. Step 2: Convert to fraction form
   3,984.71/5,498.82 = 2,216.28/x
3. Step 3: Cross multiply
   3,984.71x = 5,498.82 × 2,216.28
4. Step 4: Simplify right side
   3,984.71x = 12,186,904.17
5. Step 5: Solve for x
   x = 12,186,904.17/3,984.71
6. Step 6: Final answer
   x = 3,058.42