Finding the Fourth Proportional to 11,456.72, 17,186.16 and 3,663.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,456.72 : 17,186.16 = 3,663.68 : x
2. Step 2: Convert to fraction form
   11,456.72/17,186.16 = 3,663.68/x
3. Step 3: Cross multiply
   11,456.72x = 17,186.16 × 3,663.68
4. Step 4: Simplify right side
   11,456.72x = 62,964,590.67
5. Step 5: Solve for x
   x = 62,964,590.67/11,456.72
6. Step 6: Final answer
   x = 5,495.87