Finding the Fourth Proportional to 21,126.12, 31,693.50 and 7,087.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,126.12 : 31,693.50 = 7,087.56 : x
2. Step 2: Convert to fraction form
   21,126.12/31,693.50 = 7,087.56/x
3. Step 3: Cross multiply
   21,126.12x = 31,693.50 × 7,087.56
4. Step 4: Simplify right side
   21,126.12x = 224,629,582.86
5. Step 5: Solve for x
   x = 224,629,582.86/21,126.12
6. Step 6: Final answer
   x = 10,632.79