Finding the Fourth Proportional to 3,628.91, 5,010.72 and 2,788.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,628.91 : 5,010.72 = 2,788.28 : x
2. Step 2: Convert to fraction form
   3,628.91/5,010.72 = 2,788.28/x
3. Step 3: Cross multiply
   3,628.91x = 5,010.72 × 2,788.28
4. Step 4: Simplify right side
   3,628.91x = 13,971,290.36
5. Step 5: Solve for x
   x = 13,971,290.36/3,628.91
6. Step 6: Final answer
   x = 3,850.00