Finding the Fourth Proportional to 7,707.89, 10,636.85 and 4,171.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,707.89 : 10,636.85 = 4,171.10 : x
2. Step 2: Convert to fraction form
   7,707.89/10,636.85 = 4,171.10/x
3. Step 3: Cross multiply
   7,707.89x = 10,636.85 × 4,171.10
4. Step 4: Simplify right side
   7,707.89x = 44,367,322.28
5. Step 5: Solve for x
   x = 44,367,322.28/7,707.89
6. Step 6: Final answer
   x = 5,756.09