Finding the Fourth Proportional to 16,690.54, 23,031.37 and 9,974.83

Step by Step Solution

1. Step 1: Write the proportion equation
   16,690.54 : 23,031.37 = 9,974.83 : x
2. Step 2: Convert to fraction form
   16,690.54/23,031.37 = 9,974.83/x
3. Step 3: Cross multiply
   16,690.54x = 23,031.37 × 9,974.83
4. Step 4: Simplify right side
   16,690.54x = 229,734,000.42
5. Step 5: Solve for x
   x = 229,734,000.42/16,690.54
6. Step 6: Final answer
   x = 13,764.32