Finding the Fourth Proportional to 22,889.98, 31,589.76 and 12,819.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,889.98 : 31,589.76 = 12,819.25 : x
2. Step 2: Convert to fraction form
   22,889.98/31,589.76 = 12,819.25/x
3. Step 3: Cross multiply
   22,889.98x = 31,589.76 × 12,819.25
4. Step 4: Simplify right side
   22,889.98x = 404,957,030.88
5. Step 5: Solve for x
   x = 404,957,030.88/22,889.98
6. Step 6: Final answer
   x = 17,691.45