Finding the Fourth Proportional to 9,405.82, 12,976.60 and 5,629.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,405.82 : 12,976.60 = 5,629.09 : x
2. Step 2: Convert to fraction form
   9,405.82/12,976.60 = 5,629.09/x
3. Step 3: Cross multiply
   9,405.82x = 12,976.60 × 5,629.09
4. Step 4: Simplify right side
   9,405.82x = 73,046,449.29
5. Step 5: Solve for x
   x = 73,046,449.29/9,405.82
6. Step 6: Final answer
   x = 7,766.09