Finding the Fourth Proportional to 3,758.49, 5,629.59 and 3,172.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,758.49 : 5,629.59 = 3,172.05 : x
2. Step 2: Convert to fraction form
   3,758.49/5,629.59 = 3,172.05/x
3. Step 3: Cross multiply
   3,758.49x = 5,629.59 × 3,172.05
4. Step 4: Simplify right side
   3,758.49x = 17,857,340.96
5. Step 5: Solve for x
   x = 17,857,340.96/3,758.49
6. Step 6: Final answer
   x = 4,751.20