Finding the Fourth Proportional to 6,680.98, 9,221.61 and 3,887.02

Step by Step Solution

1. Step 1: Write the proportion equation
   6,680.98 : 9,221.61 = 3,887.02 : x
2. Step 2: Convert to fraction form
   6,680.98/9,221.61 = 3,887.02/x
3. Step 3: Cross multiply
   6,680.98x = 9,221.61 × 3,887.02
4. Step 4: Simplify right side
   6,680.98x = 35,844,582.50
5. Step 5: Solve for x
   x = 35,844,582.50/6,680.98
6. Step 6: Final answer
   x = 5,365.17