Finding the Fourth Proportional to 10,387.43, 14,334.67 and 5,671.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,387.43 : 14,334.67 = 5,671.71 : x
2. Step 2: Convert to fraction form
   10,387.43/14,334.67 = 5,671.71/x
3. Step 3: Cross multiply
   10,387.43x = 14,334.67 × 5,671.71
4. Step 4: Simplify right side
   10,387.43x = 81,302,138.59
5. Step 5: Solve for x
   x = 81,302,138.59/10,387.43
6. Step 6: Final answer
   x = 7,826.97