Finding the Fourth Proportional to 8,080.80, 11,138.79 and 7,402.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,080.80 : 11,138.79 = 7,402.83 : x
2. Step 2: Convert to fraction form
   8,080.80/11,138.79 = 7,402.83/x
3. Step 3: Cross multiply
   8,080.80x = 11,138.79 × 7,402.83
4. Step 4: Simplify right side
   8,080.80x = 82,458,568.78
5. Step 5: Solve for x
   x = 82,458,568.78/8,080.80
6. Step 6: Final answer
   x = 10,204.26