Finding the Fourth Proportional to 13,019.28, 19,528.52 and 3,659.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.28 : 19,528.52 = 3,659.33 : x
2. Step 2: Convert to fraction form
   13,019.28/19,528.52 = 3,659.33/x
3. Step 3: Cross multiply
   13,019.28x = 19,528.52 × 3,659.33
4. Step 4: Simplify right side
   13,019.28x = 71,461,183.15
5. Step 5: Solve for x
   x = 71,461,183.15/13,019.28
6. Step 6: Final answer
   x = 5,488.87