Finding the Fourth Proportional to 22,389.10, 30,896.49 and 12,179.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,389.10 : 30,896.49 = 12,179.86 : x
2. Step 2: Convert to fraction form
   22,389.10/30,896.49 = 12,179.86/x
3. Step 3: Cross multiply
   22,389.10x = 30,896.49 × 12,179.86
4. Step 4: Simplify right side
   22,389.10x = 376,314,922.69
5. Step 5: Solve for x
   x = 376,314,922.69/22,389.10
6. Step 6: Final answer
   x = 16,807.95