Finding the Fourth Proportional to 3,987.82, 5,503.06 and 2,219.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.82 : 5,503.06 = 2,219.39 : x
2. Step 2: Convert to fraction form
   3,987.82/5,503.06 = 2,219.39/x
3. Step 3: Cross multiply
   3,987.82x = 5,503.06 × 2,219.39
4. Step 4: Simplify right side
   3,987.82x = 12,213,436.33
5. Step 5: Solve for x
   x = 12,213,436.33/3,987.82
6. Step 6: Final answer
   x = 3,062.68