Finding the Fourth Proportional to 6,688.49, 9,230.69 and 5,697.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,688.49 : 9,230.69 = 5,697.05 : x
2. Step 2: Convert to fraction form
   6,688.49/9,230.69 = 5,697.05/x
3. Step 3: Cross multiply
   6,688.49x = 9,230.69 × 5,697.05
4. Step 4: Simplify right side
   6,688.49x = 52,587,670.55
5. Step 5: Solve for x
   x = 52,587,670.55/6,688.49
6. Step 6: Final answer
   x = 7,862.42