Finding the Fourth Proportional to 8,081.55, 11,139.82 and 7,403.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,081.55 : 11,139.82 = 7,403.58 : x
2. Step 2: Convert to fraction form
   8,081.55/11,139.82 = 7,403.58/x
3. Step 3: Cross multiply
   8,081.55x = 11,139.82 × 7,403.58
4. Step 4: Simplify right side
   8,081.55x = 82,474,548.56
5. Step 5: Solve for x
   x = 82,474,548.56/8,081.55
6. Step 6: Final answer
   x = 10,205.29