Finding the Fourth Proportional to 5,518.56, 7,616.52 and 4,031.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,518.56 : 7,616.52 = 4,031.40 : x
2. Step 2: Convert to fraction form
   5,518.56/7,616.52 = 4,031.40/x
3. Step 3: Cross multiply
   5,518.56x = 7,616.52 × 4,031.40
4. Step 4: Simplify right side
   5,518.56x = 30,705,238.73
5. Step 5: Solve for x
   x = 30,705,238.73/5,518.56
6. Step 6: Final answer
   x = 5,563.99