Finding the Fourth Proportional to 6,881.88, 9,498.69 and 3,899.47

Step by Step Solution

1. Step 1: Write the proportion equation
   6,881.88 : 9,498.69 = 3,899.47 : x
2. Step 2: Convert to fraction form
   6,881.88/9,498.69 = 3,899.47/x
3. Step 3: Cross multiply
   6,881.88x = 9,498.69 × 3,899.47
4. Step 4: Simplify right side
   6,881.88x = 37,039,837.20
5. Step 5: Solve for x
   x = 37,039,837.20/6,881.88
6. Step 6: Final answer
   x = 5,382.23