Finding the Fourth Proportional to 7,847.72, 10,818.42 and 5,605.64

Step by Step Solution

1. Step 1: Write the proportion equation
   7,847.72 : 10,818.42 = 5,605.64 : x
2. Step 2: Convert to fraction form
   7,847.72/10,818.42 = 5,605.64/x
3. Step 3: Cross multiply
   7,847.72x = 10,818.42 × 5,605.64
4. Step 4: Simplify right side
   7,847.72x = 60,644,167.89
5. Step 5: Solve for x
   x = 60,644,167.89/7,847.72
6. Step 6: Final answer
   x = 7,727.62