Finding the Fourth Proportional to 6,863.76, 10,298.16 and 2,915.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,863.76 : 10,298.16 = 2,915.88 : x
2. Step 2: Convert to fraction form
   6,863.76/10,298.16 = 2,915.88/x
3. Step 3: Cross multiply
   6,863.76x = 10,298.16 × 2,915.88
4. Step 4: Simplify right side
   6,863.76x = 30,028,198.78
5. Step 5: Solve for x
   x = 30,028,198.78/6,863.76
6. Step 6: Final answer
   x = 4,374.89