Finding the Fourth Proportional to 6,884.37, 9,499.71 and 3,899.61

Step by Step Solution

1. Step 1: Write the proportion equation
   6,884.37 : 9,499.71 = 3,899.61 : x
2. Step 2: Convert to fraction form
   6,884.37/9,499.71 = 3,899.61/x
3. Step 3: Cross multiply
   6,884.37x = 9,499.71 × 3,899.61
4. Step 4: Simplify right side
   6,884.37x = 37,045,164.11
5. Step 5: Solve for x
   x = 37,045,164.11/6,884.37
6. Step 6: Final answer
   x = 5,381.05