Finding the Fourth Proportional to 11,499.98, 15,863.47 and 7,243.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,499.98 : 15,863.47 = 7,243.72 : x
2. Step 2: Convert to fraction form
   11,499.98/15,863.47 = 7,243.72/x
3. Step 3: Cross multiply
   11,499.98x = 15,863.47 × 7,243.72
4. Step 4: Simplify right side
   11,499.98x = 114,910,477.14
5. Step 5: Solve for x
   x = 114,910,477.14/11,499.98
6. Step 6: Final answer
   x = 9,992.24