Finding the Fourth Proportional to 11,931.59, 16,470.18 and 7,951.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,931.59 : 16,470.18 = 7,951.25 : x
2. Step 2: Convert to fraction form
   11,931.59/16,470.18 = 7,951.25/x
3. Step 3: Cross multiply
   11,931.59x = 16,470.18 × 7,951.25
4. Step 4: Simplify right side
   11,931.59x = 130,958,436.37
5. Step 5: Solve for x
   x = 130,958,436.37/11,931.59
6. Step 6: Final answer
   x = 10,975.78