Finding the Fourth Proportional to 22,273.60, 30,738.06 and 12,713.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,273.60 : 30,738.06 = 12,713.30 : x
2. Step 2: Convert to fraction form
   22,273.60/30,738.06 = 12,713.30/x
3. Step 3: Cross multiply
   22,273.60x = 30,738.06 × 12,713.30
4. Step 4: Simplify right side
   22,273.60x = 390,782,178.20
5. Step 5: Solve for x
   x = 390,782,178.20/22,273.60
6. Step 6: Final answer
   x = 17,544.63