Finding the Fourth Proportional to 7,771.89, 10,725.20 and 4,235.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,771.89 : 10,725.20 = 4,235.10 : x
2. Step 2: Convert to fraction form
   7,771.89/10,725.20 = 4,235.10/x
3. Step 3: Cross multiply
   7,771.89x = 10,725.20 × 4,235.10
4. Step 4: Simplify right side
   7,771.89x = 45,422,240.89
5. Step 5: Solve for x
   x = 45,422,240.89/7,771.89
6. Step 6: Final answer
   x = 5,844.43