Finding the Fourth Proportional to 6,883.74, 9,499.86 and 3,899.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,883.74 : 9,499.86 = 3,899.88 : x
2. Step 2: Convert to fraction form
   6,883.74/9,499.86 = 3,899.88/x
3. Step 3: Cross multiply
   6,883.74x = 9,499.86 × 3,899.88
4. Step 4: Simplify right side
   6,883.74x = 37,048,314.02
5. Step 5: Solve for x
   x = 37,048,314.02/6,883.74
6. Step 6: Final answer
   x = 5,382.00