Finding the Fourth Proportional to 7,142.58, 9,857.82 and 4,311.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,142.58 : 9,857.82 = 4,311.59 : x
2. Step 2: Convert to fraction form
   7,142.58/9,857.82 = 4,311.59/x
3. Step 3: Cross multiply
   7,142.58x = 9,857.82 × 4,311.59
4. Step 4: Simplify right side
   7,142.58x = 42,502,828.84
5. Step 5: Solve for x
   x = 42,502,828.84/7,142.58
6. Step 6: Final answer
   x = 5,950.63