Finding the Fourth Proportional to 9,610.20, 13,260.37 and 5,418.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,610.20 : 13,260.37 = 5,418.45 : x
2. Step 2: Convert to fraction form
   9,610.20/13,260.37 = 5,418.45/x
3. Step 3: Cross multiply
   9,610.20x = 13,260.37 × 5,418.45
4. Step 4: Simplify right side
   9,610.20x = 71,850,651.83
5. Step 5: Solve for x
   x = 71,850,651.83/9,610.20
6. Step 6: Final answer
   x = 7,476.50