Finding the Fourth Proportional to 19,078.72, 28,629 and 14,907.04

Step by Step Solution

1. Step 1: Write the proportion equation
   19,078.72 : 28,629 = 14,907.04 : x
2. Step 2: Convert to fraction form
   19,078.72/28,629 = 14,907.04/x
3. Step 3: Cross multiply
   19,078.72x = 28,629 × 14,907.04
4. Step 4: Simplify right side
   19,078.72x = 426,773,648.16
5. Step 5: Solve for x
   x = 426,773,648.16/19,078.72
6. Step 6: Final answer
   x = 22,369.09