Finding the Fourth Proportional to 16,780.98, 23,151.98 and 10,405.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,780.98 : 23,151.98 = 10,405.27 : x
2. Step 2: Convert to fraction form
   16,780.98/23,151.98 = 10,405.27/x
3. Step 3: Cross multiply
   16,780.98x = 23,151.98 × 10,405.27
4. Step 4: Simplify right side
   16,780.98x = 240,902,657.89
5. Step 5: Solve for x
   x = 240,902,657.89/16,780.98
6. Step 6: Final answer
   x = 14,355.70