Finding the Fourth Proportional to 3,629.16, 5,012.82 and 3,156.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,629.16 : 5,012.82 = 3,156.12 : x
2. Step 2: Convert to fraction form
   3,629.16/5,012.82 = 3,156.12/x
3. Step 3: Cross multiply
   3,629.16x = 5,012.82 × 3,156.12
4. Step 4: Simplify right side
   3,629.16x = 15,821,061.46
5. Step 5: Solve for x
   x = 15,821,061.46/3,629.16
6. Step 6: Final answer
   x = 4,359.43