Finding the Fourth Proportional to 22,172, 30,597.40 and 12,236

Step by Step Solution

1. Step 1: Write the proportion equation
   22,172 : 30,597.40 = 12,236 : x
2. Step 2: Convert to fraction form
   22,172/30,597.40 = 12,236/x
3. Step 3: Cross multiply
   22,172x = 30,597.40 × 12,236
4. Step 4: Simplify right side
   22,172x = 374,389,786.40
5. Step 5: Solve for x
   x = 374,389,786.40/22,172
6. Step 6: Final answer
   x = 16,885.70