Finding the Fourth Proportional to 16,665.42, 23,003.40 and 9,596.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,665.42 : 23,003.40 = 9,596.55 : x
2. Step 2: Convert to fraction form
   16,665.42/23,003.40 = 9,596.55/x
3. Step 3: Cross multiply
   16,665.42x = 23,003.40 × 9,596.55
4. Step 4: Simplify right side
   16,665.42x = 220,753,278.27
5. Step 5: Solve for x
   x = 220,753,278.27/16,665.42
6. Step 6: Final answer
   x = 13,246.19