Finding the Fourth Proportional to 8,978.22, 13,456.78 and 4,042.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.22 : 13,456.78 = 4,042.08 : x
2. Step 2: Convert to fraction form
   8,978.22/13,456.78 = 4,042.08/x
3. Step 3: Cross multiply
   8,978.22x = 13,456.78 × 4,042.08
4. Step 4: Simplify right side
   8,978.22x = 54,393,381.30
5. Step 5: Solve for x
   x = 54,393,381.30/8,978.22
6. Step 6: Final answer
   x = 6,058.37