Finding the Fourth Proportional to 10,951.30, 15,112.80 and 5,915.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,951.30 : 15,112.80 = 5,915.53 : x
2. Step 2: Convert to fraction form
   10,951.30/15,112.80 = 5,915.53/x
3. Step 3: Cross multiply
   10,951.30x = 15,112.80 × 5,915.53
4. Step 4: Simplify right side
   10,951.30x = 89,400,221.78
5. Step 5: Solve for x
   x = 89,400,221.78/10,951.30
6. Step 6: Final answer
   x = 8,163.43