Finding the Fourth Proportional to 12,579.58, 17,359.72 and 7,274.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,579.58 : 17,359.72 = 7,274.28 : x
2. Step 2: Convert to fraction form
   12,579.58/17,359.72 = 7,274.28/x
3. Step 3: Cross multiply
   12,579.58x = 17,359.72 × 7,274.28
4. Step 4: Simplify right side
   12,579.58x = 126,279,464.00
5. Step 5: Solve for x
   x = 126,279,464.00/12,579.58
6. Step 6: Final answer
   x = 10,038.45