Finding the Fourth Proportional to 9,206.72, 12,705 and 5,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,206.72 : 12,705 = 5,118.50 : x
2. Step 2: Convert to fraction form
   9,206.72/12,705 = 5,118.50/x
3. Step 3: Cross multiply
   9,206.72x = 12,705 × 5,118.50
4. Step 4: Simplify right side
   9,206.72x = 65,030,542.50
5. Step 5: Solve for x
   x = 65,030,542.50/9,206.72
6. Step 6: Final answer
   x = 7,063.38