Finding the Fourth Proportional to 9,667.56, 13,347.81 and 8,658.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,667.56 : 13,347.81 = 8,658.81 : x
2. Step 2: Convert to fraction form
   9,667.56/13,347.81 = 8,658.81/x
3. Step 3: Cross multiply
   9,667.56x = 13,347.81 × 8,658.81
4. Step 4: Simplify right side
   9,667.56x = 115,576,150.71
5. Step 5: Solve for x
   x = 115,576,150.71/9,667.56
6. Step 6: Final answer
   x = 11,955.05