Finding the Fourth Proportional to 8,543.67, 12,798.49 and 5,613.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,543.67 : 12,798.49 = 5,613.09 : x
2. Step 2: Convert to fraction form
   8,543.67/12,798.49 = 5,613.09/x
3. Step 3: Cross multiply
   8,543.67x = 12,798.49 × 5,613.09
4. Step 4: Simplify right side
   8,543.67x = 71,839,076.23
5. Step 5: Solve for x
   x = 71,839,076.23/8,543.67
6. Step 6: Final answer
   x = 8,408.46