Finding the Fourth Proportional to 3,768.15, 5,621.52 and 3,671.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,768.15 : 5,621.52 = 3,671.49 : x
2. Step 2: Convert to fraction form
   3,768.15/5,621.52 = 3,671.49/x
3. Step 3: Cross multiply
   3,768.15x = 5,621.52 × 3,671.49
4. Step 4: Simplify right side
   3,768.15x = 20,639,354.46
5. Step 5: Solve for x
   x = 20,639,354.46/3,768.15
6. Step 6: Final answer
   x = 5,477.32