Finding the Fourth Proportional to 5,233.30, 7,866.15 and 5,136.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,233.30 : 7,866.15 = 5,136.10 : x
2. Step 2: Convert to fraction form
   5,233.30/7,866.15 = 5,136.10/x
3. Step 3: Cross multiply
   5,233.30x = 7,866.15 × 5,136.10
4. Step 4: Simplify right side
   5,233.30x = 40,401,333.02
5. Step 5: Solve for x
   x = 40,401,333.02/5,233.30
6. Step 6: Final answer
   x = 7,720.05