Finding the Fourth Proportional to 12,993.52, 17,930.82 and 7,956.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.52 : 17,930.82 = 7,956.94 : x
2. Step 2: Convert to fraction form
   12,993.52/17,930.82 = 7,956.94/x
3. Step 3: Cross multiply
   12,993.52x = 17,930.82 × 7,956.94
4. Step 4: Simplify right side
   12,993.52x = 142,674,458.89
5. Step 5: Solve for x
   x = 142,674,458.89/12,993.52
6. Step 6: Final answer
   x = 10,980.43