Finding the Fourth Proportional to 9,610.80, 13,260.60 and 5,419.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,610.80 : 13,260.60 = 5,419.05 : x
2. Step 2: Convert to fraction form
   9,610.80/13,260.60 = 5,419.05/x
3. Step 3: Cross multiply
   9,610.80x = 13,260.60 × 5,419.05
4. Step 4: Simplify right side
   9,610.80x = 71,859,854.43
5. Step 5: Solve for x
   x = 71,859,854.43/9,610.80
6. Step 6: Final answer
   x = 7,476.99