Finding the Fourth Proportional to 7,685.94, 10,585.89 and 6,636.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,685.94 : 10,585.89 = 6,636.18 : x
2. Step 2: Convert to fraction form
   7,685.94/10,585.89 = 6,636.18/x
3. Step 3: Cross multiply
   7,685.94x = 10,585.89 × 6,636.18
4. Step 4: Simplify right side
   7,685.94x = 70,249,871.50
5. Step 5: Solve for x
   x = 70,249,871.50/7,685.94
6. Step 6: Final answer
   x = 9,140.05