Finding the Fourth Proportional to 16,931.36, 23,363.96 and 9,377.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,931.36 : 23,363.96 = 9,377.10 : x
2. Step 2: Convert to fraction form
   16,931.36/23,363.96 = 9,377.10/x
3. Step 3: Cross multiply
   16,931.36x = 23,363.96 × 9,377.10
4. Step 4: Simplify right side
   16,931.36x = 219,086,072.50
5. Step 5: Solve for x
   x = 219,086,072.50/16,931.36
6. Step 6: Final answer
   x = 12,939.67