Finding the Fourth Proportional to 3,689.54, 5,086.83 and 2,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689.54 : 5,086.83 = 2,628.50 : x
2. Step 2: Convert to fraction form
   3,689.54/5,086.83 = 2,628.50/x
3. Step 3: Cross multiply
   3,689.54x = 5,086.83 × 2,628.50
4. Step 4: Simplify right side
   3,689.54x = 13,370,723.51
5. Step 5: Solve for x
   x = 13,370,723.51/3,689.54
6. Step 6: Final answer
   x = 3,623.96