Finding the Fourth Proportional to 22,279.31, 30,744.27 and 12,718.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,279.31 : 30,744.27 = 12,718.82 : x
2. Step 2: Convert to fraction form
   22,279.31/30,744.27 = 12,718.82/x
3. Step 3: Cross multiply
   22,279.31x = 30,744.27 × 12,718.82
4. Step 4: Simplify right side
   22,279.31x = 391,030,682.44
5. Step 5: Solve for x
   x = 391,030,682.44/22,279.31
6. Step 6: Final answer
   x = 17,551.30