Finding the Fourth Proportional to 22,255.84, 30,713.88 and 12,697.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,255.84 : 30,713.88 = 12,697.28 : x
2. Step 2: Convert to fraction form
   22,255.84/30,713.88 = 12,697.28/x
3. Step 3: Cross multiply
   22,255.84x = 30,713.88 × 12,697.28
4. Step 4: Simplify right side
   22,255.84x = 389,982,743.47
5. Step 5: Solve for x
   x = 389,982,743.47/22,255.84
6. Step 6: Final answer
   x = 17,522.71