Finding the Fourth Proportional to 6,111.83, 8,434.44 and 3,988.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.83 : 8,434.44 = 3,988.71 : x
2. Step 2: Convert to fraction form
   6,111.83/8,434.44 = 3,988.71/x
3. Step 3: Cross multiply
   6,111.83x = 8,434.44 × 3,988.71
4. Step 4: Simplify right side
   6,111.83x = 33,642,546.29
5. Step 5: Solve for x
   x = 33,642,546.29/6,111.83
6. Step 6: Final answer
   x = 5,504.50