Finding the Fourth Proportional to 9,268.09, 12,789.82 and 5,289.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,268.09 : 12,789.82 = 5,289.10 : x
2. Step 2: Convert to fraction form
   9,268.09/12,789.82 = 5,289.10/x
3. Step 3: Cross multiply
   9,268.09x = 12,789.82 × 5,289.10
4. Step 4: Simplify right side
   9,268.09x = 67,646,636.96
5. Step 5: Solve for x
   x = 67,646,636.96/9,268.09
6. Step 6: Final answer
   x = 7,298.88