Finding the Fourth Proportional to 22,168.37, 30,597.60 and 12,742.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,168.37 : 30,597.60 = 12,742.40 : x
2. Step 2: Convert to fraction form
   22,168.37/30,597.60 = 12,742.40/x
3. Step 3: Cross multiply
   22,168.37x = 30,597.60 × 12,742.40
4. Step 4: Simplify right side
   22,168.37x = 389,886,858.24
5. Step 5: Solve for x
   x = 389,886,858.24/22,168.37
6. Step 6: Final answer
   x = 17,587.53