Finding the Fourth Proportional to 19,144.52, 28,687.55 and 8,045.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,144.52 : 28,687.55 = 8,045.15 : x
2. Step 2: Convert to fraction form
   19,144.52/28,687.55 = 8,045.15/x
3. Step 3: Cross multiply
   19,144.52x = 28,687.55 × 8,045.15
4. Step 4: Simplify right side
   19,144.52x = 230,795,674.38
5. Step 5: Solve for x
   x = 230,795,674.38/19,144.52
6. Step 6: Final answer
   x = 12,055.45