Finding the Fourth Proportional to 16,761.56, 23,131.02 and 9,309.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,761.56 : 23,131.02 = 9,309.56 : x
2. Step 2: Convert to fraction form
   16,761.56/23,131.02 = 9,309.56/x
3. Step 3: Cross multiply
   16,761.56x = 23,131.02 × 9,309.56
4. Step 4: Simplify right side
   16,761.56x = 215,339,618.55
5. Step 5: Solve for x
   x = 215,339,618.55/16,761.56
6. Step 6: Final answer
   x = 12,847.23