Finding the Fourth Proportional to 22,139.34, 30,553.07 and 12,579.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,139.34 : 30,553.07 = 12,579.09 : x
2. Step 2: Convert to fraction form
   22,139.34/30,553.07 = 12,579.09/x
3. Step 3: Cross multiply
   22,139.34x = 30,553.07 × 12,579.09
4. Step 4: Simplify right side
   22,139.34x = 384,329,817.31
5. Step 5: Solve for x
   x = 384,329,817.31/22,139.34
6. Step 6: Final answer
   x = 17,359.59