Finding the Fourth Proportional to 12,013.74, 16,579.89 and 6,979.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,013.74 : 16,579.89 = 6,979.59 : x
2. Step 2: Convert to fraction form
   12,013.74/16,579.89 = 6,979.59/x
3. Step 3: Cross multiply
   12,013.74x = 16,579.89 × 6,979.59
4. Step 4: Simplify right side
   12,013.74x = 115,720,834.45
5. Step 5: Solve for x
   x = 115,720,834.45/12,013.74
6. Step 6: Final answer
   x = 9,632.37