Finding the Fourth Proportional to 10,951.36, 15,112.89 and 5,915.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,951.36 : 15,112.89 = 5,915.58 : x
2. Step 2: Convert to fraction form
   10,951.36/15,112.89 = 5,915.58/x
3. Step 3: Cross multiply
   10,951.36x = 15,112.89 × 5,915.58
4. Step 4: Simplify right side
   10,951.36x = 89,401,564.85
5. Step 5: Solve for x
   x = 89,401,564.85/10,951.36
6. Step 6: Final answer
   x = 8,163.51