Finding the Fourth Proportional to 16,436.72, 22,682.63 and 9,363.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,436.72 : 22,682.63 = 9,363.20 : x
2. Step 2: Convert to fraction form
   16,436.72/22,682.63 = 9,363.20/x
3. Step 3: Cross multiply
   16,436.72x = 22,682.63 × 9,363.20
4. Step 4: Simplify right side
   16,436.72x = 212,381,911.21
5. Step 5: Solve for x
   x = 212,381,911.21/16,436.72
6. Step 6: Final answer
   x = 12,921.18