Finding the Fourth Proportional to 10,391.43, 14,321.62 and 7,867.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,391.43 : 14,321.62 = 7,867.50 : x
2. Step 2: Convert to fraction form
   10,391.43/14,321.62 = 7,867.50/x
3. Step 3: Cross multiply
   10,391.43x = 14,321.62 × 7,867.50
4. Step 4: Simplify right side
   10,391.43x = 112,675,345.35
5. Step 5: Solve for x
   x = 112,675,345.35/10,391.43
6. Step 6: Final answer
   x = 10,843.10