Finding the Fourth Proportional to 6,111.98, 9,169.80 and 3,513.09

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.98 : 9,169.80 = 3,513.09 : x
2. Step 2: Convert to fraction form
   6,111.98/9,169.80 = 3,513.09/x
3. Step 3: Cross multiply
   6,111.98x = 9,169.80 × 3,513.09
4. Step 4: Simplify right side
   6,111.98x = 32,214,353.89
5. Step 5: Solve for x
   x = 32,214,353.89/6,111.98
6. Step 6: Final answer
   x = 5,270.69