Finding the Fourth Proportional to 5,688.56, 7,851.03 and 5,439.49

Step by Step Solution

1. Step 1: Write the proportion equation
   5,688.56 : 7,851.03 = 5,439.49 : x
2. Step 2: Convert to fraction form
   5,688.56/7,851.03 = 5,439.49/x
3. Step 3: Cross multiply
   5,688.56x = 7,851.03 × 5,439.49
4. Step 4: Simplify right side
   5,688.56x = 42,705,559.15
5. Step 5: Solve for x
   x = 42,705,559.15/5,688.56
6. Step 6: Final answer
   x = 7,507.27