Finding the Fourth Proportional to 3,629.91, 5,012.10 and 2,789.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,629.91 : 5,012.10 = 2,789.28 : x
2. Step 2: Convert to fraction form
   3,629.91/5,012.10 = 2,789.28/x
3. Step 3: Cross multiply
   3,629.91x = 5,012.10 × 2,789.28
4. Step 4: Simplify right side
   3,629.91x = 13,980,150.29
5. Step 5: Solve for x
   x = 13,980,150.29/3,629.91
6. Step 6: Final answer
   x = 3,851.38