Finding the Fourth Proportional to 16,623.16, 22,939.82 and 9,171

Step by Step Solution

1. Step 1: Write the proportion equation
   16,623.16 : 22,939.82 = 9,171 : x
2. Step 2: Convert to fraction form
   16,623.16/22,939.82 = 9,171/x
3. Step 3: Cross multiply
   16,623.16x = 22,939.82 × 9,171
4. Step 4: Simplify right side
   16,623.16x = 210,381,089.22
5. Step 5: Solve for x
   x = 210,381,089.22/16,623.16
6. Step 6: Final answer
   x = 12,655.90