Finding the Fourth Proportional to 12,942.60, 17,846.79 and 9,951.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942.60 : 17,846.79 = 9,951.84 : x
2. Step 2: Convert to fraction form
   12,942.60/17,846.79 = 9,951.84/x
3. Step 3: Cross multiply
   12,942.60x = 17,846.79 × 9,951.84
4. Step 4: Simplify right side
   12,942.60x = 177,608,398.59
5. Step 5: Solve for x
   x = 177,608,398.59/12,942.60
6. Step 6: Final answer
   x = 13,722.78