Finding the Fourth Proportional to 3,987.67, 5,503.24 and 2,219.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.67 : 5,503.24 = 2,219.27 : x
2. Step 2: Convert to fraction form
   3,987.67/5,503.24 = 2,219.27/x
3. Step 3: Cross multiply
   3,987.67x = 5,503.24 × 2,219.27
4. Step 4: Simplify right side
   3,987.67x = 12,213,175.43
5. Step 5: Solve for x
   x = 12,213,175.43/3,987.67
6. Step 6: Final answer
   x = 3,062.73