Finding the Fourth Proportional to 5,200.02, 7,172.55 and 3,518.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,200.02 : 7,172.55 = 3,518.46 : x
2. Step 2: Convert to fraction form
   5,200.02/7,172.55 = 3,518.46/x
3. Step 3: Cross multiply
   5,200.02x = 7,172.55 × 3,518.46
4. Step 4: Simplify right side
   5,200.02x = 25,236,330.27
5. Step 5: Solve for x
   x = 25,236,330.27/5,200.02
6. Step 6: Final answer
   x = 4,853.12