Finding the Fourth Proportional to 11,172.42, 16,749.72 and 7,227.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,172.42 : 16,749.72 = 7,227.72 : x
2. Step 2: Convert to fraction form
   11,172.42/16,749.72 = 7,227.72/x
3. Step 3: Cross multiply
   11,172.42x = 16,749.72 × 7,227.72
4. Step 4: Simplify right side
   11,172.42x = 121,062,286.24
5. Step 5: Solve for x
   x = 121,062,286.24/11,172.42
6. Step 6: Final answer
   x = 10,835.82