Finding the Fourth Proportional to 9,667.60, 14,506.20 and 5,510.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,667.60 : 14,506.20 = 5,510.80 : x
2. Step 2: Convert to fraction form
   9,667.60/14,506.20 = 5,510.80/x
3. Step 3: Cross multiply
   9,667.60x = 14,506.20 × 5,510.80
4. Step 4: Simplify right side
   9,667.60x = 79,940,766.96
5. Step 5: Solve for x
   x = 79,940,766.96/9,667.60
6. Step 6: Final answer
   x = 8,268.94