Finding the Fourth Proportional to 7,180.96, 10,773.60 and 3,485.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,180.96 : 10,773.60 = 3,485.20 : x
2. Step 2: Convert to fraction form
   7,180.96/10,773.60 = 3,485.20/x
3. Step 3: Cross multiply
   7,180.96x = 10,773.60 × 3,485.20
4. Step 4: Simplify right side
   7,180.96x = 37,548,150.72
5. Step 5: Solve for x
   x = 37,548,150.72/7,180.96
6. Step 6: Final answer
   x = 5,228.85