Finding the Fourth Proportional to 3,982.18, 5,495.69 and 2,388.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,982.18 : 5,495.69 = 2,388.89 : x
2. Step 2: Convert to fraction form
   3,982.18/5,495.69 = 2,388.89/x
3. Step 3: Cross multiply
   3,982.18x = 5,495.69 × 2,388.89
4. Step 4: Simplify right side
   3,982.18x = 13,128,598.88
5. Step 5: Solve for x
   x = 13,128,598.88/3,982.18
6. Step 6: Final answer
   x = 3,296.84