Finding the Fourth Proportional to 12,738.09, 17,579.69 and 7,434.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,738.09 : 17,579.69 = 7,434.62 : x
2. Step 2: Convert to fraction form
   12,738.09/17,579.69 = 7,434.62/x
3. Step 3: Cross multiply
   12,738.09x = 17,579.69 × 7,434.62
4. Step 4: Simplify right side
   12,738.09x = 130,698,314.87
5. Step 5: Solve for x
   x = 130,698,314.87/12,738.09
6. Step 6: Final answer
   x = 10,260.43