Finding the Fourth Proportional to 16,931.40, 23,363.55 and 9,377.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,931.40 : 23,363.55 = 9,377.53 : x
2. Step 2: Convert to fraction form
   16,931.40/23,363.55 = 9,377.53/x
3. Step 3: Cross multiply
   16,931.40x = 23,363.55 × 9,377.53
4. Step 4: Simplify right side
   16,931.40x = 219,092,332.62
5. Step 5: Solve for x
   x = 219,092,332.62/16,931.40
6. Step 6: Final answer
   x = 12,940.00