Finding the Fourth Proportional to 3,647.89, 5,036.39 and 2,528.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,647.89 : 5,036.39 = 2,528.42 : x
2. Step 2: Convert to fraction form
   3,647.89/5,036.39 = 2,528.42/x
3. Step 3: Cross multiply
   3,647.89x = 5,036.39 × 2,528.42
4. Step 4: Simplify right side
   3,647.89x = 12,734,137.58
5. Step 5: Solve for x
   x = 12,734,137.58/3,647.89
6. Step 6: Final answer
   x = 3,490.82