Finding the Fourth Proportional to 12,757.59, 17,604.56 and 7,979.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,757.59 : 17,604.56 = 7,979.69 : x
2. Step 2: Convert to fraction form
   12,757.59/17,604.56 = 7,979.69/x
3. Step 3: Cross multiply
   12,757.59x = 17,604.56 × 7,979.69
4. Step 4: Simplify right side
   12,757.59x = 140,478,803.47
5. Step 5: Solve for x
   x = 140,478,803.47/12,757.59
6. Step 6: Final answer
   x = 11,011.39