Finding the Fourth Proportional to 22,443.63, 30,972 and 12,234.66

Step by Step Solution

1. Step 1: Write the proportion equation
   22,443.63 : 30,972 = 12,234.66 : x
2. Step 2: Convert to fraction form
   22,443.63/30,972 = 12,234.66/x
3. Step 3: Cross multiply
   22,443.63x = 30,972 × 12,234.66
4. Step 4: Simplify right side
   22,443.63x = 378,931,889.52
5. Step 5: Solve for x
   x = 378,931,889.52/22,443.63
6. Step 6: Final answer
   x = 16,883.72