Finding the Fourth Proportional to 3,984.60, 5,498.76 and 2,216.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.60 : 5,498.76 = 2,216.22 : x
2. Step 2: Convert to fraction form
   3,984.60/5,498.76 = 2,216.22/x
3. Step 3: Cross multiply
   3,984.60x = 5,498.76 × 2,216.22
4. Step 4: Simplify right side
   3,984.60x = 12,186,461.89
5. Step 5: Solve for x
   x = 12,186,461.89/3,984.60
6. Step 6: Final answer
   x = 3,058.39