Finding the Fourth Proportional to 5,620.69, 7,756.55 and 3,136.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,620.69 : 7,756.55 = 3,136.69 : x
2. Step 2: Convert to fraction form
   5,620.69/7,756.55 = 3,136.69/x
3. Step 3: Cross multiply
   5,620.69x = 7,756.55 × 3,136.69
4. Step 4: Simplify right side
   5,620.69x = 24,329,892.82
5. Step 5: Solve for x
   x = 24,329,892.82/5,620.69
6. Step 6: Final answer
   x = 4,328.63