Finding the Fourth Proportional to 11,019.72, 16,529.88 and 3,228.51

Step by Step Solution

1. Step 1: Write the proportion equation
   11,019.72 : 16,529.88 = 3,228.51 : x
2. Step 2: Convert to fraction form
   11,019.72/16,529.88 = 3,228.51/x
3. Step 3: Cross multiply
   11,019.72x = 16,529.88 × 3,228.51
4. Step 4: Simplify right side
   11,019.72x = 53,366,882.88
5. Step 5: Solve for x
   x = 53,366,882.88/11,019.72
6. Step 6: Final answer
   x = 4,842.85