Finding the Fourth Proportional to 12,071.58, 18,103.89 and 3,306.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,071.58 : 18,103.89 = 3,306.78 : x
2. Step 2: Convert to fraction form
   12,071.58/18,103.89 = 3,306.78/x
3. Step 3: Cross multiply
   12,071.58x = 18,103.89 × 3,306.78
4. Step 4: Simplify right side
   12,071.58x = 59,865,581.37
5. Step 5: Solve for x
   x = 59,865,581.37/12,071.58
6. Step 6: Final answer
   x = 4,959.22