Finding the Fourth Proportional to 8,049.26, 12,071.55 and 3,117.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,049.26 : 12,071.55 = 3,117.80 : x
2. Step 2: Convert to fraction form
   8,049.26/12,071.55 = 3,117.80/x
3. Step 3: Cross multiply
   8,049.26x = 12,071.55 × 3,117.80
4. Step 4: Simplify right side
   8,049.26x = 37,636,678.59
5. Step 5: Solve for x
   x = 37,636,678.59/8,049.26
6. Step 6: Final answer
   x = 4,675.79