Finding the Fourth Proportional to 5,799.78, 8,003.61 and 3,147.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,799.78 : 8,003.61 = 3,147.18 : x
2. Step 2: Convert to fraction form
   5,799.78/8,003.61 = 3,147.18/x
3. Step 3: Cross multiply
   5,799.78x = 8,003.61 × 3,147.18
4. Step 4: Simplify right side
   5,799.78x = 25,188,801.32
5. Step 5: Solve for x
   x = 25,188,801.32/5,799.78
6. Step 6: Final answer
   x = 4,343.06