Finding the Fourth Proportional to 19,019.05, 28,535.33 and 8,488.11

Step by Step Solution

1. Step 1: Write the proportion equation
   19,019.05 : 28,535.33 = 8,488.11 : x
2. Step 2: Convert to fraction form
   19,019.05/28,535.33 = 8,488.11/x
3. Step 3: Cross multiply
   19,019.05x = 28,535.33 × 8,488.11
4. Step 4: Simplify right side
   19,019.05x = 242,211,019.93
5. Step 5: Solve for x
   x = 242,211,019.93/19,019.05
6. Step 6: Final answer
   x = 12,735.18