Finding the Fourth Proportional to 16,890.55, 23,309.04 and 9,233.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,890.55 : 23,309.04 = 9,233.98 : x
2. Step 2: Convert to fraction form
   16,890.55/23,309.04 = 9,233.98/x
3. Step 3: Cross multiply
   16,890.55x = 23,309.04 × 9,233.98
4. Step 4: Simplify right side
   16,890.55x = 215,235,209.18
5. Step 5: Solve for x
   x = 215,235,209.18/16,890.55
6. Step 6: Final answer
   x = 12,742.94