Finding the Fourth Proportional to 16,828.78, 23,223.76 and 10,118.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,828.78 : 23,223.76 = 10,118.25 : x
2. Step 2: Convert to fraction form
   16,828.78/23,223.76 = 10,118.25/x
3. Step 3: Cross multiply
   16,828.78x = 23,223.76 × 10,118.25
4. Step 4: Simplify right side
   16,828.78x = 234,983,841.24
5. Step 5: Solve for x
   x = 234,983,841.24/16,828.78
6. Step 6: Final answer
   x = 13,963.21