Finding the Fourth Proportional to 7,843.86, 10,826.42 and 4,857.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,843.86 : 10,826.42 = 4,857.89 : x
2. Step 2: Convert to fraction form
   7,843.86/10,826.42 = 4,857.89/x
3. Step 3: Cross multiply
   7,843.86x = 10,826.42 × 4,857.89
4. Step 4: Simplify right side
   7,843.86x = 52,593,479.03
5. Step 5: Solve for x
   x = 52,593,479.03/7,843.86
6. Step 6: Final answer
   x = 6,705.05