Finding the Fourth Proportional to 11,968.52, 16,520.82 and 8,613.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,968.52 : 16,520.82 = 8,613.32 : x
2. Step 2: Convert to fraction form
   11,968.52/16,520.82 = 8,613.32/x
3. Step 3: Cross multiply
   11,968.52x = 16,520.82 × 8,613.32
4. Step 4: Simplify right side
   11,968.52x = 142,299,109.32
5. Step 5: Solve for x
   x = 142,299,109.32/11,968.52
6. Step 6: Final answer
   x = 11,889.45