Finding the Fourth Proportional to 3,871.32, 5,776.52 and 3,636.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.32 : 5,776.52 = 3,636.24 : x
2. Step 2: Convert to fraction form
   3,871.32/5,776.52 = 3,636.24/x
3. Step 3: Cross multiply
   3,871.32x = 5,776.52 × 3,636.24
4. Step 4: Simplify right side
   3,871.32x = 21,004,813.08
5. Step 5: Solve for x
   x = 21,004,813.08/3,871.32
6. Step 6: Final answer
   x = 5,425.75