Finding the Fourth Proportional to 16,941.72, 23,379.54 and 9,285

Step by Step Solution

1. Step 1: Write the proportion equation
   16,941.72 : 23,379.54 = 9,285 : x
2. Step 2: Convert to fraction form
   16,941.72/23,379.54 = 9,285/x
3. Step 3: Cross multiply
   16,941.72x = 23,379.54 × 9,285
4. Step 4: Simplify right side
   16,941.72x = 217,079,028.90
5. Step 5: Solve for x
   x = 217,079,028.90/16,941.72
6. Step 6: Final answer
   x = 12,813.28