Finding the Fourth Proportional to 5,566.78, 8,345.31 and 2,789.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,566.78 : 8,345.31 = 2,789.56 : x
2. Step 2: Convert to fraction form
   5,566.78/8,345.31 = 2,789.56/x
3. Step 3: Cross multiply
   5,566.78x = 8,345.31 × 2,789.56
4. Step 4: Simplify right side
   5,566.78x = 23,279,742.96
5. Step 5: Solve for x
   x = 23,279,742.96/5,566.78
6. Step 6: Final answer
   x = 4,181.90