Finding the Fourth Proportional to 12,315.29, 16,997.18 and 7,009.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.29 : 16,997.18 = 7,009.38 : x
2. Step 2: Convert to fraction form
   12,315.29/16,997.18 = 7,009.38/x
3. Step 3: Cross multiply
   12,315.29x = 16,997.18 × 7,009.38
4. Step 4: Simplify right side
   12,315.29x = 119,139,658.50
5. Step 5: Solve for x
   x = 119,139,658.50/12,315.29
6. Step 6: Final answer
   x = 9,674.13