Finding the Fourth Proportional to 3,877.69, 5,351.73 and 3,772.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,877.69 : 5,351.73 = 3,772.15 : x
2. Step 2: Convert to fraction form
   3,877.69/5,351.73 = 3,772.15/x
3. Step 3: Cross multiply
   3,877.69x = 5,351.73 × 3,772.15
4. Step 4: Simplify right side
   3,877.69x = 20,187,528.32
5. Step 5: Solve for x
   x = 20,187,528.32/3,877.69
6. Step 6: Final answer
   x = 5,206.07