Finding the Fourth Proportional to 7,857.89, 10,843.89 and 4,321.34

Step by Step Solution

1. Step 1: Write the proportion equation
   7,857.89 : 10,843.89 = 4,321.34 : x
2. Step 2: Convert to fraction form
   7,857.89/10,843.89 = 4,321.34/x
3. Step 3: Cross multiply
   7,857.89x = 10,843.89 × 4,321.34
4. Step 4: Simplify right side
   7,857.89x = 46,860,135.61
5. Step 5: Solve for x
   x = 46,860,135.61/7,857.89
6. Step 6: Final answer
   x = 5,963.45