Finding the Fourth Proportional to 9,667.49, 13,339.89 and 5,687.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,667.49 : 13,339.89 = 5,687.15 : x
2. Step 2: Convert to fraction form
   9,667.49/13,339.89 = 5,687.15/x
3. Step 3: Cross multiply
   9,667.49x = 13,339.89 × 5,687.15
4. Step 4: Simplify right side
   9,667.49x = 75,865,888.71
5. Step 5: Solve for x
   x = 75,865,888.71/9,667.49
6. Step 6: Final answer
   x = 7,847.53