Finding the Fourth Proportional to 22,281.85, 30,749.69 and 12,210.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,281.85 : 30,749.69 = 12,210.31 : x
2. Step 2: Convert to fraction form
   22,281.85/30,749.69 = 12,210.31/x
3. Step 3: Cross multiply
   22,281.85x = 30,749.69 × 12,210.31
4. Step 4: Simplify right side
   22,281.85x = 375,463,316.27
5. Step 5: Solve for x
   x = 375,463,316.27/22,281.85
6. Step 6: Final answer
   x = 16,850.63