Finding the Fourth Proportional to 8,613.39, 12,911.91 and 5,452.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,613.39 : 12,911.91 = 5,452.50 : x
2. Step 2: Convert to fraction form
   8,613.39/12,911.91 = 5,452.50/x
3. Step 3: Cross multiply
   8,613.39x = 12,911.91 × 5,452.50
4. Step 4: Simplify right side
   8,613.39x = 70,402,189.28
5. Step 5: Solve for x
   x = 70,402,189.28/8,613.39
6. Step 6: Final answer
   x = 8,173.58