Finding the Fourth Proportional to 16,518.72, 22,790.25 and 9,440.13

Step by Step Solution

1. Step 1: Write the proportion equation
   16,518.72 : 22,790.25 = 9,440.13 : x
2. Step 2: Convert to fraction form
   16,518.72/22,790.25 = 9,440.13/x
3. Step 3: Cross multiply
   16,518.72x = 22,790.25 × 9,440.13
4. Step 4: Simplify right side
   16,518.72x = 215,142,922.73
5. Step 5: Solve for x
   x = 215,142,922.73/16,518.72
6. Step 6: Final answer
   x = 13,024.19