Finding the Fourth Proportional to 12,966.71, 17,894.41 and 7,930.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,966.71 : 17,894.41 = 7,930.83 : x
2. Step 2: Convert to fraction form
   12,966.71/17,894.41 = 7,930.83/x
3. Step 3: Cross multiply
   12,966.71x = 17,894.41 × 7,930.83
4. Step 4: Simplify right side
   12,966.71x = 141,917,570.94
5. Step 5: Solve for x
   x = 141,917,570.94/12,966.71
6. Step 6: Final answer
   x = 10,944.77