Finding the Fourth Proportional to 3,938.58, 5,900.31 and 2,208.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,938.58 : 5,900.31 = 2,208.42 : x
2. Step 2: Convert to fraction form
   3,938.58/5,900.31 = 2,208.42/x
3. Step 3: Cross multiply
   3,938.58x = 5,900.31 × 2,208.42
4. Step 4: Simplify right side
   3,938.58x = 13,030,362.61
5. Step 5: Solve for x
   x = 13,030,362.61/3,938.58
6. Step 6: Final answer
   x = 3,308.39