Finding the Fourth Proportional to 11,945.10, 16,481.52 and 7,229.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.10 : 16,481.52 = 7,229.28 : x
2. Step 2: Convert to fraction form
   11,945.10/16,481.52 = 7,229.28/x
3. Step 3: Cross multiply
   11,945.10x = 16,481.52 × 7,229.28
4. Step 4: Simplify right side
   11,945.10x = 119,149,522.91
5. Step 5: Solve for x
   x = 119,149,522.91/11,945.10
6. Step 6: Final answer
   x = 9,974.76