Finding the Fourth Proportional to 11,910.80, 16,429.41 and 7,667.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,910.80 : 16,429.41 = 7,667.42 : x
2. Step 2: Convert to fraction form
   11,910.80/16,429.41 = 7,667.42/x
3. Step 3: Cross multiply
   11,910.80x = 16,429.41 × 7,667.42
4. Step 4: Simplify right side
   11,910.80x = 125,971,104.68
5. Step 5: Solve for x
   x = 125,971,104.68/11,910.80
6. Step 6: Final answer
   x = 10,576.21