Finding the Fourth Proportional to 12,520.62, 18,764.91 and 5,116.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,520.62 : 18,764.91 = 5,116.50 : x
2. Step 2: Convert to fraction form
   12,520.62/18,764.91 = 5,116.50/x
3. Step 3: Cross multiply
   12,520.62x = 18,764.91 × 5,116.50
4. Step 4: Simplify right side
   12,520.62x = 96,010,662.02
5. Step 5: Solve for x
   x = 96,010,662.02/12,520.62
6. Step 6: Final answer
   x = 7,668.20