Finding the Fourth Proportional to 16,389.82, 22,617.94 and 9,316.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,389.82 : 22,617.94 = 9,316.69 : x
2. Step 2: Convert to fraction form
   16,389.82/22,617.94 = 9,316.69/x
3. Step 3: Cross multiply
   16,389.82x = 22,617.94 × 9,316.69
4. Step 4: Simplify right side
   16,389.82x = 210,724,335.42
5. Step 5: Solve for x
   x = 210,724,335.42/16,389.82
6. Step 6: Final answer
   x = 12,857.03