Finding the Fourth Proportional to 12,078.18, 18,110.52 and 4,676.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078.18 : 18,110.52 = 4,676.40 : x
2. Step 2: Convert to fraction form
   12,078.18/18,110.52 = 4,676.40/x
3. Step 3: Cross multiply
   12,078.18x = 18,110.52 × 4,676.40
4. Step 4: Simplify right side
   12,078.18x = 84,692,035.73
5. Step 5: Solve for x
   x = 84,692,035.73/12,078.18
6. Step 6: Final answer
   x = 7,011.99