Finding the Fourth Proportional to 6,688.72, 10,025.52 and 5,040.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,688.72 : 10,025.52 = 5,040.10 : x
2. Step 2: Convert to fraction form
   6,688.72/10,025.52 = 5,040.10/x
3. Step 3: Cross multiply
   6,688.72x = 10,025.52 × 5,040.10
4. Step 4: Simplify right side
   6,688.72x = 50,529,623.35
5. Step 5: Solve for x
   x = 50,529,623.35/6,688.72
6. Step 6: Final answer
   x = 7,554.45