Finding the Fourth Proportional to 22,297.83, 30,773.57 and 12,739.23

Step by Step Solution

1. Step 1: Write the proportion equation
   22,297.83 : 30,773.57 = 12,739.23 : x
2. Step 2: Convert to fraction form
   22,297.83/30,773.57 = 12,739.23/x
3. Step 3: Cross multiply
   22,297.83x = 30,773.57 × 12,739.23
4. Step 4: Simplify right side
   22,297.83x = 392,031,522.45
5. Step 5: Solve for x
   x = 392,031,522.45/22,297.83
6. Step 6: Final answer
   x = 17,581.60