Finding the Fourth Proportional to 11,648.52, 16,079.61 and 6,931.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,648.52 : 16,079.61 = 6,931.89 : x
2. Step 2: Convert to fraction form
   11,648.52/16,079.61 = 6,931.89/x
3. Step 3: Cross multiply
   11,648.52x = 16,079.61 × 6,931.89
4. Step 4: Simplify right side
   11,648.52x = 111,462,087.76
5. Step 5: Solve for x
   x = 111,462,087.76/11,648.52
6. Step 6: Final answer
   x = 9,568.78