Finding the Fourth Proportional to 3,665.97, 5,065.73 and 2,669.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.97 : 5,065.73 = 2,669.51 : x
2. Step 2: Convert to fraction form
   3,665.97/5,065.73 = 2,669.51/x
3. Step 3: Cross multiply
   3,665.97x = 5,065.73 × 2,669.51
4. Step 4: Simplify right side
   3,665.97x = 13,523,016.89
5. Step 5: Solve for x
   x = 13,523,016.89/3,665.97
6. Step 6: Final answer
   x = 3,688.80