Finding the Fourth Proportional to 6,355.98, 8,772.03 and 3,998.07

Step by Step Solution

1. Step 1: Write the proportion equation
   6,355.98 : 8,772.03 = 3,998.07 : x
2. Step 2: Convert to fraction form
   6,355.98/8,772.03 = 3,998.07/x
3. Step 3: Cross multiply
   6,355.98x = 8,772.03 × 3,998.07
4. Step 4: Simplify right side
   6,355.98x = 35,071,189.98
5. Step 5: Solve for x
   x = 35,071,189.98/6,355.98
6. Step 6: Final answer
   x = 5,517.83