Finding the Fourth Proportional to 22,805.28, 31,472.82 and 12,736.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,805.28 : 31,472.82 = 12,736.98 : x
2. Step 2: Convert to fraction form
   22,805.28/31,472.82 = 12,736.98/x
3. Step 3: Cross multiply
   22,805.28x = 31,472.82 × 12,736.98
4. Step 4: Simplify right side
   22,805.28x = 400,868,678.88
5. Step 5: Solve for x
   x = 400,868,678.88/22,805.28
6. Step 6: Final answer
   x = 17,577.89