Finding the Fourth Proportional to 22,164.56, 30,586.78 and 12,733.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,164.56 : 30,586.78 = 12,733.20 : x
2. Step 2: Convert to fraction form
   22,164.56/30,586.78 = 12,733.20/x
3. Step 3: Cross multiply
   22,164.56x = 30,586.78 × 12,733.20
4. Step 4: Simplify right side
   22,164.56x = 389,467,587.10
5. Step 5: Solve for x
   x = 389,467,587.10/22,164.56
6. Step 6: Final answer
   x = 17,571.64