Finding the Fourth Proportional to 9,268.38, 12,780.18 and 5,907.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,268.38 : 12,780.18 = 5,907.42 : x
2. Step 2: Convert to fraction form
   9,268.38/12,780.18 = 5,907.42/x
3. Step 3: Cross multiply
   9,268.38x = 12,780.18 × 5,907.42
4. Step 4: Simplify right side
   9,268.38x = 75,497,890.94
5. Step 5: Solve for x
   x = 75,497,890.94/9,268.38
6. Step 6: Final answer
   x = 8,145.75