Finding the Fourth Proportional to 11,338.88, 17,007.39 and 7,166.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,338.88 : 17,007.39 = 7,166.72 : x
2. Step 2: Convert to fraction form
   11,338.88/17,007.39 = 7,166.72/x
3. Step 3: Cross multiply
   11,338.88x = 17,007.39 × 7,166.72
4. Step 4: Simplify right side
   11,338.88x = 121,887,117.02
5. Step 5: Solve for x
   x = 121,887,117.02/11,338.88
6. Step 6: Final answer
   x = 10,749.49