Finding the Fourth Proportional to 13,092.72, 18,067.80 and 8,622.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,092.72 : 18,067.80 = 8,622.96 : x
2. Step 2: Convert to fraction form
   13,092.72/18,067.80 = 8,622.96/x
3. Step 3: Cross multiply
   13,092.72x = 18,067.80 × 8,622.96
4. Step 4: Simplify right side
   13,092.72x = 155,797,916.69
5. Step 5: Solve for x
   x = 155,797,916.69/13,092.72
6. Step 6: Final answer
   x = 11,899.58