Finding the Fourth Proportional to 16,593.76, 22,921.20 and 12,394.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,593.76 : 22,921.20 = 12,394.72 : x
2. Step 2: Convert to fraction form
   16,593.76/22,921.20 = 12,394.72/x
3. Step 3: Cross multiply
   16,593.76x = 22,921.20 × 12,394.72
4. Step 4: Simplify right side
   16,593.76x = 284,101,856.06
5. Step 5: Solve for x
   x = 284,101,856.06/16,593.76
6. Step 6: Final answer
   x = 17,121.01