Finding the Fourth Proportional to 12,404.38, 17,118.31 and 6,815.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.38 : 17,118.31 = 6,815.38 : x
2. Step 2: Convert to fraction form
   12,404.38/17,118.31 = 6,815.38/x
3. Step 3: Cross multiply
   12,404.38x = 17,118.31 × 6,815.38
4. Step 4: Simplify right side
   12,404.38x = 116,667,702.02
5. Step 5: Solve for x
   x = 116,667,702.02/12,404.38
6. Step 6: Final answer
   x = 9,405.37