Finding the Fourth Proportional to 7,665.30, 10,578.60 and 5,019.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,665.30 : 10,578.60 = 5,019.84 : x
2. Step 2: Convert to fraction form
   7,665.30/10,578.60 = 5,019.84/x
3. Step 3: Cross multiply
   7,665.30x = 10,578.60 × 5,019.84
4. Step 4: Simplify right side
   7,665.30x = 53,102,879.42
5. Step 5: Solve for x
   x = 53,102,879.42/7,665.30
6. Step 6: Final answer
   x = 6,927.70