Finding the Fourth Proportional to 9,636.57, 14,456.79 and 4,089.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,636.57 : 14,456.79 = 4,089.87 : x
2. Step 2: Convert to fraction form
   9,636.57/14,456.79 = 4,089.87/x
3. Step 3: Cross multiply
   9,636.57x = 14,456.79 × 4,089.87
4. Step 4: Simplify right side
   9,636.57x = 59,126,391.72
5. Step 5: Solve for x
   x = 59,126,391.72/9,636.57
6. Step 6: Final answer
   x = 6,135.63