Finding the Fourth Proportional to 7,144.34, 9,858.71 and 4,159.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,144.34 : 9,858.71 = 4,159.69 : x
2. Step 2: Convert to fraction form
   7,144.34/9,858.71 = 4,159.69/x
3. Step 3: Cross multiply
   7,144.34x = 9,858.71 × 4,159.69
4. Step 4: Simplify right side
   7,144.34x = 41,009,163.15
5. Step 5: Solve for x
   x = 41,009,163.15/7,144.34
6. Step 6: Final answer
   x = 5,740.10