Finding the Fourth Proportional to 16,471.20, 22,730.32 and 9,399.84

Step by Step Solution

1. Step 1: Write the proportion equation
   16,471.20 : 22,730.32 = 9,399.84 : x
2. Step 2: Convert to fraction form
   16,471.20/22,730.32 = 9,399.84/x
3. Step 3: Cross multiply
   16,471.20x = 22,730.32 × 9,399.84
4. Step 4: Simplify right side
   16,471.20x = 213,661,371.15
5. Step 5: Solve for x
   x = 213,661,371.15/16,471.20
6. Step 6: Final answer
   x = 12,971.82