Finding the Fourth Proportional to 7,147.31, 10,677.36 and 5,688.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,147.31 : 10,677.36 = 5,688.09 : x
2. Step 2: Convert to fraction form
   7,147.31/10,677.36 = 5,688.09/x
3. Step 3: Cross multiply
   7,147.31x = 10,677.36 × 5,688.09
4. Step 4: Simplify right side
   7,147.31x = 60,733,756.20
5. Step 5: Solve for x
   x = 60,733,756.20/7,147.31
6. Step 6: Final answer
   x = 8,497.43