Finding the Fourth Proportional to 6,883.56, 9,499.28 and 3,899.99

Step by Step Solution

1. Step 1: Write the proportion equation
   6,883.56 : 9,499.28 = 3,899.99 : x
2. Step 2: Convert to fraction form
   6,883.56/9,499.28 = 3,899.99/x
3. Step 3: Cross multiply
   6,883.56x = 9,499.28 × 3,899.99
4. Step 4: Simplify right side
   6,883.56x = 37,047,030.01
5. Step 5: Solve for x
   x = 37,047,030.01/6,883.56
6. Step 6: Final answer
   x = 5,381.96