Finding the Fourth Proportional to 3,985.26, 5,499.54 and 2,216.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.26 : 5,499.54 = 2,216.82 : x
2. Step 2: Convert to fraction form
   3,985.26/5,499.54 = 2,216.82/x
3. Step 3: Cross multiply
   3,985.26x = 5,499.54 × 2,216.82
4. Step 4: Simplify right side
   3,985.26x = 12,191,490.26
5. Step 5: Solve for x
   x = 12,191,490.26/3,985.26
6. Step 6: Final answer
   x = 3,059.15