Finding the Fourth Proportional to 16,764.98, 23,128.94 and 10,389.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,764.98 : 23,128.94 = 10,389.47 : x
2. Step 2: Convert to fraction form
   16,764.98/23,128.94 = 10,389.47/x
3. Step 3: Cross multiply
   16,764.98x = 23,128.94 × 10,389.47
4. Step 4: Simplify right side
   16,764.98x = 240,297,338.59
5. Step 5: Solve for x
   x = 240,297,338.59/16,764.98
6. Step 6: Final answer
   x = 14,333.30