Finding the Fourth Proportional to 16,345.16, 22,555.18 and 9,272.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,345.16 : 22,555.18 = 9,272.72 : x
2. Step 2: Convert to fraction form
   16,345.16/22,555.18 = 9,272.72/x
3. Step 3: Cross multiply
   16,345.16x = 22,555.18 × 9,272.72
4. Step 4: Simplify right side
   16,345.16x = 209,147,868.69
5. Step 5: Solve for x
   x = 209,147,868.69/16,345.16
6. Step 6: Final answer
   x = 12,795.71