Finding the Fourth Proportional to 7,206.72, 10,817.52 and 5,129.04

Step by Step Solution

1. Step 1: Write the proportion equation
   7,206.72 : 10,817.52 = 5,129.04 : x
2. Step 2: Convert to fraction form
   7,206.72/10,817.52 = 5,129.04/x
3. Step 3: Cross multiply
   7,206.72x = 10,817.52 × 5,129.04
4. Step 4: Simplify right side
   7,206.72x = 55,483,492.78
5. Step 5: Solve for x
   x = 55,483,492.78/7,206.72
6. Step 6: Final answer
   x = 7,698.86