Finding the Fourth Proportional to 16,815.42, 23,205.28 and 9,363.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,815.42 : 23,205.28 = 9,363.42 : x
2. Step 2: Convert to fraction form
   16,815.42/23,205.28 = 9,363.42/x
3. Step 3: Cross multiply
   16,815.42x = 23,205.28 × 9,363.42
4. Step 4: Simplify right side
   16,815.42x = 217,280,782.86
5. Step 5: Solve for x
   x = 217,280,782.86/16,815.42
6. Step 6: Final answer
   x = 12,921.52