Finding the Fourth Proportional to 19,019.18, 28,469 and 13,061.18

Step by Step Solution

1. Step 1: Write the proportion equation
   19,019.18 : 28,469 = 13,061.18 : x
2. Step 2: Convert to fraction form
   19,019.18/28,469 = 13,061.18/x
3. Step 3: Cross multiply
   19,019.18x = 28,469 × 13,061.18
4. Step 4: Simplify right side
   19,019.18x = 371,838,733.42
5. Step 5: Solve for x
   x = 371,838,733.42/19,019.18
6. Step 6: Final answer
   x = 19,550.72