Finding the Fourth Proportional to 16,708.81, 23,058.12 and 9,155.59

Step by Step Solution

1. Step 1: Write the proportion equation
   16,708.81 : 23,058.12 = 9,155.59 : x
2. Step 2: Convert to fraction form
   16,708.81/23,058.12 = 9,155.59/x
3. Step 3: Cross multiply
   16,708.81x = 23,058.12 × 9,155.59
4. Step 4: Simplify right side
   16,708.81x = 211,110,692.89
5. Step 5: Solve for x
   x = 211,110,692.89/16,708.81
6. Step 6: Final answer
   x = 12,634.69