Finding the Fourth Proportional to 12,579.86, 17,358.89 and 7,276.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,579.86 : 17,358.89 = 7,276.38 : x
2. Step 2: Convert to fraction form
   12,579.86/17,358.89 = 7,276.38/x
3. Step 3: Cross multiply
   12,579.86x = 17,358.89 × 7,276.38
4. Step 4: Simplify right side
   12,579.86x = 126,309,843.64
5. Step 5: Solve for x
   x = 126,309,843.64/12,579.86
6. Step 6: Final answer
   x = 10,040.64