Finding the Fourth Proportional to 12,228.72, 18,343.16 and 2,994.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,228.72 : 18,343.16 = 2,994.72 : x
2. Step 2: Convert to fraction form
   12,228.72/18,343.16 = 2,994.72/x
3. Step 3: Cross multiply
   12,228.72x = 18,343.16 × 2,994.72
4. Step 4: Simplify right side
   12,228.72x = 54,932,628.12
5. Step 5: Solve for x
   x = 54,932,628.12/12,228.72
6. Step 6: Final answer
   x = 4,492.10