Finding the Fourth Proportional to 10,165.65, 14,022.99 and 7,145.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,165.65 : 14,022.99 = 7,145.42 : x
2. Step 2: Convert to fraction form
   10,165.65/14,022.99 = 7,145.42/x
3. Step 3: Cross multiply
   10,165.65x = 14,022.99 × 7,145.42
4. Step 4: Simplify right side
   10,165.65x = 100,200,083.09
5. Step 5: Solve for x
   x = 100,200,083.09/10,165.65
6. Step 6: Final answer
   x = 9,856.73