Finding the Fourth Proportional to 3,836.69, 5,721.45 and 3,801.66

Step by Step Solution

1. Step 1: Write the proportion equation
   3,836.69 : 5,721.45 = 3,801.66 : x
2. Step 2: Convert to fraction form
   3,836.69/5,721.45 = 3,801.66/x
3. Step 3: Cross multiply
   3,836.69x = 5,721.45 × 3,801.66
4. Step 4: Simplify right side
   3,836.69x = 21,751,007.61
5. Step 5: Solve for x
   x = 21,751,007.61/3,836.69
6. Step 6: Final answer
   x = 5,669.21