Finding the Fourth Proportional to 12,278.72, 18,418.16 and 3,044.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,278.72 : 18,418.16 = 3,044.72 : x
2. Step 2: Convert to fraction form
   12,278.72/18,418.16 = 3,044.72/x
3. Step 3: Cross multiply
   12,278.72x = 18,418.16 × 3,044.72
4. Step 4: Simplify right side
   12,278.72x = 56,078,140.12
5. Step 5: Solve for x
   x = 56,078,140.12/12,278.72
6. Step 6: Final answer
   x = 4,567.10