Finding the Fourth Proportional to 16,761.76, 23,131.46 and 9,208.79

Step by Step Solution

1. Step 1: Write the proportion equation
   16,761.76 : 23,131.46 = 9,208.79 : x
2. Step 2: Convert to fraction form
   16,761.76/23,131.46 = 9,208.79/x
3. Step 3: Cross multiply
   16,761.76x = 23,131.46 × 9,208.79
4. Step 4: Simplify right side
   16,761.76x = 213,012,630.37
5. Step 5: Solve for x
   x = 213,012,630.37/16,761.76
6. Step 6: Final answer
   x = 12,708.25