Finding the Fourth Proportional to 10,863.43, 14,991.89 and 6,147.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,863.43 : 14,991.89 = 6,147.61 : x
2. Step 2: Convert to fraction form
   10,863.43/14,991.89 = 6,147.61/x
3. Step 3: Cross multiply
   10,863.43x = 14,991.89 × 6,147.61
4. Step 4: Simplify right side
   10,863.43x = 92,164,292.88
5. Step 5: Solve for x
   x = 92,164,292.88/10,863.43
6. Step 6: Final answer
   x = 8,483.90