Finding the Fourth Proportional to 8,103.71, 11,172.03 and 5,118.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,103.71 : 11,172.03 = 5,118.05 : x
2. Step 2: Convert to fraction form
   8,103.71/11,172.03 = 5,118.05/x
3. Step 3: Cross multiply
   8,103.71x = 11,172.03 × 5,118.05
4. Step 4: Simplify right side
   8,103.71x = 57,179,016.88
5. Step 5: Solve for x
   x = 57,179,016.88/8,103.71
6. Step 6: Final answer
   x = 7,055.90