Finding the Fourth Proportional to 9,268.22, 12,789.56 and 5,290.65

Step by Step Solution

1. Step 1: Write the proportion equation
   9,268.22 : 12,789.56 = 5,290.65 : x
2. Step 2: Convert to fraction form
   9,268.22/12,789.56 = 5,290.65/x
3. Step 3: Cross multiply
   9,268.22x = 12,789.56 × 5,290.65
4. Step 4: Simplify right side
   9,268.22x = 67,665,098.84
5. Step 5: Solve for x
   x = 67,665,098.84/9,268.22
6. Step 6: Final answer
   x = 7,300.76