Finding the Fourth Proportional to 9,665.65, 13,345.02 and 7,423.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,665.65 : 13,345.02 = 7,423.52 : x
2. Step 2: Convert to fraction form
   9,665.65/13,345.02 = 7,423.52/x
3. Step 3: Cross multiply
   9,665.65x = 13,345.02 × 7,423.52
4. Step 4: Simplify right side
   9,665.65x = 99,067,008.07
5. Step 5: Solve for x
   x = 99,067,008.07/9,665.65
6. Step 6: Final answer
   x = 10,249.39