Finding the Fourth Proportional to 11,764.85, 16,238.78 and 7,940.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,764.85 : 16,238.78 = 7,940.94 : x
2. Step 2: Convert to fraction form
   11,764.85/16,238.78 = 7,940.94/x
3. Step 3: Cross multiply
   11,764.85x = 16,238.78 × 7,940.94
4. Step 4: Simplify right side
   11,764.85x = 128,951,106.83
5. Step 5: Solve for x
   x = 128,951,106.83/11,764.85
6. Step 6: Final answer
   x = 10,960.71