Finding the Fourth Proportional to 7,142.72, 9,856.01 and 4,159.08

Step by Step Solution

1. Step 1: Write the proportion equation
   7,142.72 : 9,856.01 = 4,159.08 : x
2. Step 2: Convert to fraction form
   7,142.72/9,856.01 = 4,159.08/x
3. Step 3: Cross multiply
   7,142.72x = 9,856.01 × 4,159.08
4. Step 4: Simplify right side
   7,142.72x = 40,991,944.47
5. Step 5: Solve for x
   x = 40,991,944.47/7,142.72
6. Step 6: Final answer
   x = 5,738.99