Finding the Fourth Proportional to 11,409.96, 17,105.99 and 7,665.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,409.96 : 17,105.99 = 7,665.54 : x
2. Step 2: Convert to fraction form
   11,409.96/17,105.99 = 7,665.54/x
3. Step 3: Cross multiply
   11,409.96x = 17,105.99 × 7,665.54
4. Step 4: Simplify right side
   11,409.96x = 131,126,548.11
5. Step 5: Solve for x
   x = 131,126,548.11/11,409.96
6. Step 6: Final answer
   x = 11,492.28