Finding the Fourth Proportional to 9,915.10, 14,867.94 and 5,756.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,915.10 : 14,867.94 = 5,756.38 : x
2. Step 2: Convert to fraction form
   9,915.10/14,867.94 = 5,756.38/x
3. Step 3: Cross multiply
   9,915.10x = 14,867.94 × 5,756.38
4. Step 4: Simplify right side
   9,915.10x = 85,585,512.46
5. Step 5: Solve for x
   x = 85,585,512.46/9,915.10
6. Step 6: Final answer
   x = 8,631.84