Finding the Fourth Proportional to 5,553.78, 7,665.46 and 3,789.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,553.78 : 7,665.46 = 3,789.60 : x
2. Step 2: Convert to fraction form
   5,553.78/7,665.46 = 3,789.60/x
3. Step 3: Cross multiply
   5,553.78x = 7,665.46 × 3,789.60
4. Step 4: Simplify right side
   5,553.78x = 29,049,027.22
5. Step 5: Solve for x
   x = 29,049,027.22/5,553.78
6. Step 6: Final answer
   x = 5,230.50