Finding the Fourth Proportional to 11,734.91, 16,188.75 and 10,391.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,734.91 : 16,188.75 = 10,391.89 : x
2. Step 2: Convert to fraction form
   11,734.91/16,188.75 = 10,391.89/x
3. Step 3: Cross multiply
   11,734.91x = 16,188.75 × 10,391.89
4. Step 4: Simplify right side
   11,734.91x = 168,231,639.54
5. Step 5: Solve for x
   x = 168,231,639.54/11,734.91
6. Step 6: Final answer
   x = 14,336.00