Finding the Fourth Proportional to 22,100.75, 33,150.33 and 9,620.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,100.75 : 33,150.33 = 9,620.78 : x
2. Step 2: Convert to fraction form
   22,100.75/33,150.33 = 9,620.78/x
3. Step 3: Cross multiply
   22,100.75x = 33,150.33 × 9,620.78
4. Step 4: Simplify right side
   22,100.75x = 318,932,031.86
5. Step 5: Solve for x
   x = 318,932,031.86/22,100.75
6. Step 6: Final answer
   x = 14,430.82