Finding the Fourth Proportional to 12,730.74, 17,568.81 and 7,429.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,730.74 : 17,568.81 = 7,429.02 : x
2. Step 2: Convert to fraction form
   12,730.74/17,568.81 = 7,429.02/x
3. Step 3: Cross multiply
   12,730.74x = 17,568.81 × 7,429.02
4. Step 4: Simplify right side
   12,730.74x = 130,519,040.87
5. Step 5: Solve for x
   x = 130,519,040.87/12,730.74
6. Step 6: Final answer
   x = 10,252.27