Finding the Fourth Proportional to 10,387.59, 14,334.81 and 5,671.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,387.59 : 14,334.81 = 5,671.89 : x
2. Step 2: Convert to fraction form
   10,387.59/14,334.81 = 5,671.89/x
3. Step 3: Cross multiply
   10,387.59x = 14,334.81 × 5,671.89
4. Step 4: Simplify right side
   10,387.59x = 81,305,465.49
5. Step 5: Solve for x
   x = 81,305,465.49/10,387.59
6. Step 6: Final answer
   x = 7,827.17