Finding the Fourth Proportional to 10,664.78, 15,974.69 and 6,950.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,664.78 : 15,974.69 = 6,950.52 : x
2. Step 2: Convert to fraction form
   10,664.78/15,974.69 = 6,950.52/x
3. Step 3: Cross multiply
   10,664.78x = 15,974.69 × 6,950.52
4. Step 4: Simplify right side
   10,664.78x = 111,032,367.59
5. Step 5: Solve for x
   x = 111,032,367.59/10,664.78
6. Step 6: Final answer
   x = 10,411.13