Finding the Fourth Proportional to 16,725.86, 23,081.94 and 9,172.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,725.86 : 23,081.94 = 9,172.88 : x
2. Step 2: Convert to fraction form
   16,725.86/23,081.94 = 9,172.88/x
3. Step 3: Cross multiply
   16,725.86x = 23,081.94 × 9,172.88
4. Step 4: Simplify right side
   16,725.86x = 211,727,750.38
5. Step 5: Solve for x
   x = 211,727,750.38/16,725.86
6. Step 6: Final answer
   x = 12,658.71