Finding the Fourth Proportional to 20,131.42, 30,198.61 and 5,340.01

Step by Step Solution

1. Step 1: Write the proportion equation
   20,131.42 : 30,198.61 = 5,340.01 : x
2. Step 2: Convert to fraction form
   20,131.42/30,198.61 = 5,340.01/x
3. Step 3: Cross multiply
   20,131.42x = 30,198.61 × 5,340.01
4. Step 4: Simplify right side
   20,131.42x = 161,260,715.04
5. Step 5: Solve for x
   x = 161,260,715.04/20,131.42
6. Step 6: Final answer
   x = 8,010.40