Finding the Fourth Proportional to 20,764.43, 31,145.55 and 5,972.76

Step by Step Solution

1. Step 1: Write the proportion equation
   20,764.43 : 31,145.55 = 5,972.76 : x
2. Step 2: Convert to fraction form
   20,764.43/31,145.55 = 5,972.76/x
3. Step 3: Cross multiply
   20,764.43x = 31,145.55 × 5,972.76
4. Step 4: Simplify right side
   20,764.43x = 186,025,012.01
5. Step 5: Solve for x
   x = 186,025,012.01/20,764.43
6. Step 6: Final answer
   x = 8,958.83