Finding the Fourth Proportional to 3,932.72, 5,877.62 and 3,621.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,932.72 : 5,877.62 = 3,621.36 : x
2. Step 2: Convert to fraction form
   3,932.72/5,877.62 = 3,621.36/x
3. Step 3: Cross multiply
   3,932.72x = 5,877.62 × 3,621.36
4. Step 4: Simplify right side
   3,932.72x = 21,284,977.96
5. Step 5: Solve for x
   x = 21,284,977.96/3,932.72
6. Step 6: Final answer
   x = 5,412.28