Finding the Fourth Proportional to 10,086.71, 13,915.83 and 6,256.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,086.71 : 13,915.83 = 6,256.57 : x
2. Step 2: Convert to fraction form
   10,086.71/13,915.83 = 6,256.57/x
3. Step 3: Cross multiply
   10,086.71x = 13,915.83 × 6,256.57
4. Step 4: Simplify right side
   10,086.71x = 87,065,364.50
5. Step 5: Solve for x
   x = 87,065,364.50/10,086.71
6. Step 6: Final answer
   x = 8,631.69