Finding the Fourth Proportional to 12,464.86, 17,202.72 and 9,315.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,464.86 : 17,202.72 = 9,315.58 : x
2. Step 2: Convert to fraction form
   12,464.86/17,202.72 = 9,315.58/x
3. Step 3: Cross multiply
   12,464.86x = 17,202.72 × 9,315.58
4. Step 4: Simplify right side
   12,464.86x = 160,253,314.38
5. Step 5: Solve for x
   x = 160,253,314.38/12,464.86
6. Step 6: Final answer
   x = 12,856.41