Finding the Fourth Proportional to 22,196.61, 30,629.97 and 12,123

Step by Step Solution

1. Step 1: Write the proportion equation
   22,196.61 : 30,629.97 = 12,123 : x
2. Step 2: Convert to fraction form
   22,196.61/30,629.97 = 12,123/x
3. Step 3: Cross multiply
   22,196.61x = 30,629.97 × 12,123
4. Step 4: Simplify right side
   22,196.61x = 371,327,126.31
5. Step 5: Solve for x
   x = 371,327,126.31/22,196.61
6. Step 6: Final answer
   x = 16,729.00