Finding the Fourth Proportional to 5,877.78, 8,111.59 and 3,519.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,877.78 : 8,111.59 = 3,519.47 : x
2. Step 2: Convert to fraction form
   5,877.78/8,111.59 = 3,519.47/x
3. Step 3: Cross multiply
   5,877.78x = 8,111.59 × 3,519.47
4. Step 4: Simplify right side
   5,877.78x = 28,548,497.66
5. Step 5: Solve for x
   x = 28,548,497.66/5,877.78
6. Step 6: Final answer
   x = 4,857.02