Finding the Fourth Proportional to 12,330.85, 18,498.06 and 3,894.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,330.85 : 18,498.06 = 3,894.49 : x
2. Step 2: Convert to fraction form
   12,330.85/18,498.06 = 3,894.49/x
3. Step 3: Cross multiply
   12,330.85x = 18,498.06 × 3,894.49
4. Step 4: Simplify right side
   12,330.85x = 72,040,490.22
5. Step 5: Solve for x
   x = 72,040,490.22/12,330.85
6. Step 6: Final answer
   x = 5,842.30