Finding the Fourth Proportional to 11,910.72, 16,447.86 and 7,669.14

Step by Step Solution

1. Step 1: Write the proportion equation
   11,910.72 : 16,447.86 = 7,669.14 : x
2. Step 2: Convert to fraction form
   11,910.72/16,447.86 = 7,669.14/x
3. Step 3: Cross multiply
   11,910.72x = 16,447.86 × 7,669.14
4. Step 4: Simplify right side
   11,910.72x = 126,140,941.04
5. Step 5: Solve for x
   x = 126,140,941.04/11,910.72
6. Step 6: Final answer
   x = 10,590.54