Finding the Fourth Proportional to 12,993.43, 17,931.46 and 7,251.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.43 : 17,931.46 = 7,251.39 : x
2. Step 2: Convert to fraction form
   12,993.43/17,931.46 = 7,251.39/x
3. Step 3: Cross multiply
   12,993.43x = 17,931.46 × 7,251.39
4. Step 4: Simplify right side
   12,993.43x = 130,028,009.73
5. Step 5: Solve for x
   x = 130,028,009.73/12,993.43
6. Step 6: Final answer
   x = 10,007.21