Finding the Fourth Proportional to 6,884.18, 9,499.90 and 3,899.83

Step by Step Solution

1. Step 1: Write the proportion equation
   6,884.18 : 9,499.90 = 3,899.83 : x
2. Step 2: Convert to fraction form
   6,884.18/9,499.90 = 3,899.83/x
3. Step 3: Cross multiply
   6,884.18x = 9,499.90 × 3,899.83
4. Step 4: Simplify right side
   6,884.18x = 37,047,995.02
5. Step 5: Solve for x
   x = 37,047,995.02/6,884.18
6. Step 6: Final answer
   x = 5,381.61