Finding the Fourth Proportional to 5,843.08, 8,719.89 and 5,219.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,843.08 : 8,719.89 = 5,219.78 : x
2. Step 2: Convert to fraction form
   5,843.08/8,719.89 = 5,219.78/x
3. Step 3: Cross multiply
   5,843.08x = 8,719.89 × 5,219.78
4. Step 4: Simplify right side
   5,843.08x = 45,515,920.47
5. Step 5: Solve for x
   x = 45,515,920.47/5,843.08
6. Step 6: Final answer
   x = 7,789.72