Finding the Fourth Proportional to 6,667.47, 9,989.73 and 3,331.22

Step by Step Solution

1. Step 1: Write the proportion equation
   6,667.47 : 9,989.73 = 3,331.22 : x
2. Step 2: Convert to fraction form
   6,667.47/9,989.73 = 3,331.22/x
3. Step 3: Cross multiply
   6,667.47x = 9,989.73 × 3,331.22
4. Step 4: Simplify right side
   6,667.47x = 33,277,938.42
5. Step 5: Solve for x
   x = 33,277,938.42/6,667.47
6. Step 6: Final answer
   x = 4,991.09