Finding the Fourth Proportional to 3,857.56, 5,326.50 and 3,562.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857.56 : 5,326.50 = 3,562.72 : x
2. Step 2: Convert to fraction form
   3,857.56/5,326.50 = 3,562.72/x
3. Step 3: Cross multiply
   3,857.56x = 5,326.50 × 3,562.72
4. Step 4: Simplify right side
   3,857.56x = 18,976,828.08
5. Step 5: Solve for x
   x = 18,976,828.08/3,857.56
6. Step 6: Final answer
   x = 4,919.39