Finding the Fourth Proportional to 12,980.52, 19,550.55 and 12,067.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.52 : 19,550.55 = 12,067.96 : x
2. Step 2: Convert to fraction form
   12,980.52/19,550.55 = 12,067.96/x
3. Step 3: Cross multiply
   12,980.52x = 19,550.55 × 12,067.96
4. Step 4: Simplify right side
   12,980.52x = 235,935,255.38
5. Step 5: Solve for x
   x = 235,935,255.38/12,980.52
6. Step 6: Final answer
   x = 18,176.10