Finding the Fourth Proportional to 22,178, 30,605.68 and 12,242

Step by Step Solution

1. Step 1: Write the proportion equation
   22,178 : 30,605.68 = 12,242 : x
2. Step 2: Convert to fraction form
   22,178/30,605.68 = 12,242/x
3. Step 3: Cross multiply
   22,178x = 30,605.68 × 12,242
4. Step 4: Simplify right side
   22,178x = 374,674,734.56
5. Step 5: Solve for x
   x = 374,674,734.56/22,178
6. Step 6: Final answer
   x = 16,893.98