Finding the Fourth Proportional to 16,761.98, 23,131.67 and 9,208.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,761.98 : 23,131.67 = 9,208.47 : x
2. Step 2: Convert to fraction form
   16,761.98/23,131.67 = 9,208.47/x
3. Step 3: Cross multiply
   16,761.98x = 23,131.67 × 9,208.47
4. Step 4: Simplify right side
   16,761.98x = 213,007,289.24
5. Step 5: Solve for x
   x = 213,007,289.24/16,761.98
6. Step 6: Final answer
   x = 12,707.76