Finding the Fourth Proportional to 10,391.15, 14,339.78 and 5,675.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,391.15 : 14,339.78 = 5,675.43 : x
2. Step 2: Convert to fraction form
   10,391.15/14,339.78 = 5,675.43/x
3. Step 3: Cross multiply
   10,391.15x = 14,339.78 × 5,675.43
4. Step 4: Simplify right side
   10,391.15x = 81,384,417.61
5. Step 5: Solve for x
   x = 81,384,417.61/10,391.15
6. Step 6: Final answer
   x = 7,832.09