Finding the Fourth Proportional to 20,924.72, 31,388.16 and 5,342.48

Step by Step Solution

1. Step 1: Write the proportion equation
   20,924.72 : 31,388.16 = 5,342.48 : x
2. Step 2: Convert to fraction form
   20,924.72/31,388.16 = 5,342.48/x
3. Step 3: Cross multiply
   20,924.72x = 31,388.16 × 5,342.48
4. Step 4: Simplify right side
   20,924.72x = 167,690,617.04
5. Step 5: Solve for x
   x = 167,690,617.04/20,924.72
6. Step 6: Final answer
   x = 8,014.00