Finding the Fourth Proportional to 22,772.79, 31,428.72 and 13,819.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,772.79 : 31,428.72 = 13,819.59 : x
2. Step 2: Convert to fraction form
   22,772.79/31,428.72 = 13,819.59/x
3. Step 3: Cross multiply
   22,772.79x = 31,428.72 × 13,819.59
4. Step 4: Simplify right side
   22,772.79x = 434,332,024.62
5. Step 5: Solve for x
   x = 434,332,024.62/22,772.79
6. Step 6: Final answer
   x = 19,072.41