Finding the Fourth Proportional to 22,288.34, 30,757.49 and 12,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,288.34 : 30,757.49 = 12,216.50 : x
2. Step 2: Convert to fraction form
   22,288.34/30,757.49 = 12,216.50/x
3. Step 3: Cross multiply
   22,288.34x = 30,757.49 × 12,216.50
4. Step 4: Simplify right side
   22,288.34x = 375,748,876.59
5. Step 5: Solve for x
   x = 375,748,876.59/22,288.34
6. Step 6: Final answer
   x = 16,858.54