Finding the Fourth Proportional to 6,658.86, 9,189.69 and 3,826.70

Step by Step Solution

1. Step 1: Write the proportion equation
   6,658.86 : 9,189.69 = 3,826.70 : x
2. Step 2: Convert to fraction form
   6,658.86/9,189.69 = 3,826.70/x
3. Step 3: Cross multiply
   6,658.86x = 9,189.69 × 3,826.70
4. Step 4: Simplify right side
   6,658.86x = 35,166,186.72
5. Step 5: Solve for x
   x = 35,166,186.72/6,658.86
6. Step 6: Final answer
   x = 5,281.11