Finding the Fourth Proportional to 5,540.17, 7,642.86 and 3,300.79

Step by Step Solution

1. Step 1: Write the proportion equation
   5,540.17 : 7,642.86 = 3,300.79 : x
2. Step 2: Convert to fraction form
   5,540.17/7,642.86 = 3,300.79/x
3. Step 3: Cross multiply
   5,540.17x = 7,642.86 × 3,300.79
4. Step 4: Simplify right side
   5,540.17x = 25,227,475.86
5. Step 5: Solve for x
   x = 25,227,475.86/5,540.17
6. Step 6: Final answer
   x = 4,553.56