Finding the Fourth Proportional to 16,828.86, 23,223.69 and 9,275.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,828.86 : 23,223.69 = 9,275.49 : x
2. Step 2: Convert to fraction form
   16,828.86/23,223.69 = 9,275.49/x
3. Step 3: Cross multiply
   16,828.86x = 23,223.69 × 9,275.49
4. Step 4: Simplify right side
   16,828.86x = 215,411,104.36
5. Step 5: Solve for x
   x = 215,411,104.36/16,828.86
6. Step 6: Final answer
   x = 12,800.10