Finding the Fourth Proportional to 22,139.24, 30,552.86 and 12,578.95

Step by Step Solution

1. Step 1: Write the proportion equation
   22,139.24 : 30,552.86 = 12,578.95 : x
2. Step 2: Convert to fraction form
   22,139.24/30,552.86 = 12,578.95/x
3. Step 3: Cross multiply
   22,139.24x = 30,552.86 × 12,578.95
4. Step 4: Simplify right side
   22,139.24x = 384,322,898.30
5. Step 5: Solve for x
   x = 384,322,898.30/22,139.24
6. Step 6: Final answer
   x = 17,359.35