Finding the Fourth Proportional to 3,995.72, 5,977.52 and 3,453.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,995.72 : 5,977.52 = 3,453.72 : x
2. Step 2: Convert to fraction form
   3,995.72/5,977.52 = 3,453.72/x
3. Step 3: Cross multiply
   3,995.72x = 5,977.52 × 3,453.72
4. Step 4: Simplify right side
   3,995.72x = 20,644,680.37
5. Step 5: Solve for x
   x = 20,644,680.37/3,995.72
6. Step 6: Final answer
   x = 5,166.70