Finding the Fourth Proportional to 16,581.72, 22,883.15 and 9,412.11

Step by Step Solution

1. Step 1: Write the proportion equation
   16,581.72 : 22,883.15 = 9,412.11 : x
2. Step 2: Convert to fraction form
   16,581.72/22,883.15 = 9,412.11/x
3. Step 3: Cross multiply
   16,581.72x = 22,883.15 × 9,412.11
4. Step 4: Simplify right side
   16,581.72x = 215,378,677.89
5. Step 5: Solve for x
   x = 215,378,677.89/16,581.72
6. Step 6: Final answer
   x = 12,988.92