Finding the Fourth Proportional to 22,288.38, 30,758.72 and 12,216.81

Step by Step Solution

1. Step 1: Write the proportion equation
   22,288.38 : 30,758.72 = 12,216.81 : x
2. Step 2: Convert to fraction form
   22,288.38/30,758.72 = 12,216.81/x
3. Step 3: Cross multiply
   22,288.38x = 30,758.72 × 12,216.81
4. Step 4: Simplify right side
   22,288.38x = 375,773,492.34
5. Step 5: Solve for x
   x = 375,773,492.34/22,288.38
6. Step 6: Final answer
   x = 16,859.62