Finding the Fourth Proportional to 22,287.88, 30,756.06 and 12,216.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,287.88 : 30,756.06 = 12,216.34 : x
2. Step 2: Convert to fraction form
   22,287.88/30,756.06 = 12,216.34/x
3. Step 3: Cross multiply
   22,287.88x = 30,756.06 × 12,216.34
4. Step 4: Simplify right side
   22,287.88x = 375,726,486.02
5. Step 5: Solve for x
   x = 375,726,486.02/22,287.88
6. Step 6: Final answer
   x = 16,857.88