Finding the Fourth Proportional to 22,210.35, 30,649.37 and 12,139.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,210.35 : 30,649.37 = 12,139.12 : x
2. Step 2: Convert to fraction form
   22,210.35/30,649.37 = 12,139.12/x
3. Step 3: Cross multiply
   22,210.35x = 30,649.37 × 12,139.12
4. Step 4: Simplify right side
   22,210.35x = 372,056,380.35
5. Step 5: Solve for x
   x = 372,056,380.35/22,210.35
6. Step 6: Final answer
   x = 16,751.49