Finding the Fourth Proportional to 8,103.80, 11,180.17 and 5,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,103.80 : 11,180.17 = 5,118.50 : x
2. Step 2: Convert to fraction form
   8,103.80/11,180.17 = 5,118.50/x
3. Step 3: Cross multiply
   8,103.80x = 11,180.17 × 5,118.50
4. Step 4: Simplify right side
   8,103.80x = 57,225,700.15
5. Step 5: Solve for x
   x = 57,225,700.15/8,103.80
6. Step 6: Final answer
   x = 7,061.59