Finding the Fourth Proportional to 20,683.72, 31,028.82 and 7,535.80

Step by Step Solution

1. Step 1: Write the proportion equation
   20,683.72 : 31,028.82 = 7,535.80 : x
2. Step 2: Convert to fraction form
   20,683.72/31,028.82 = 7,535.80/x
3. Step 3: Cross multiply
   20,683.72x = 31,028.82 × 7,535.80
4. Step 4: Simplify right side
   20,683.72x = 233,826,981.76
5. Step 5: Solve for x
   x = 233,826,981.76/20,683.72
6. Step 6: Final answer
   x = 11,304.88