Finding the Fourth Proportional to 16,721.49, 23,078.01 and 10,350.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,721.49 : 23,078.01 = 10,350.15 : x
2. Step 2: Convert to fraction form
   16,721.49/23,078.01 = 10,350.15/x
3. Step 3: Cross multiply
   16,721.49x = 23,078.01 × 10,350.15
4. Step 4: Simplify right side
   16,721.49x = 238,860,865.20
5. Step 5: Solve for x
   x = 238,860,865.20/16,721.49
6. Step 6: Final answer
   x = 14,284.66