Finding the Fourth Proportional to 12,665.88, 18,979.20 and 9,542.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.88 : 18,979.20 = 9,542.52 : x
2. Step 2: Convert to fraction form
   12,665.88/18,979.20 = 9,542.52/x
3. Step 3: Cross multiply
   12,665.88x = 18,979.20 × 9,542.52
4. Step 4: Simplify right side
   12,665.88x = 181,109,395.58
5. Step 5: Solve for x
   x = 181,109,395.58/12,665.88
6. Step 6: Final answer
   x = 14,299.00