Finding the Fourth Proportional to 16,362.81, 22,581.32 and 9,289.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,362.81 : 22,581.32 = 9,289.89 : x
2. Step 2: Convert to fraction form
   16,362.81/22,581.32 = 9,289.89/x
3. Step 3: Cross multiply
   16,362.81x = 22,581.32 × 9,289.89
4. Step 4: Simplify right side
   16,362.81x = 209,777,932.41
5. Step 5: Solve for x
   x = 209,777,932.41/16,362.81
6. Step 6: Final answer
   x = 12,820.41