Finding the Fourth Proportional to 5,412.78, 8,118.71 and 1,714.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,412.78 : 8,118.71 = 1,714.47 : x
2. Step 2: Convert to fraction form
   5,412.78/8,118.71 = 1,714.47/x
3. Step 3: Cross multiply
   5,412.78x = 8,118.71 × 1,714.47
4. Step 4: Simplify right side
   5,412.78x = 13,919,284.73
5. Step 5: Solve for x
   x = 13,919,284.73/5,412.78
6. Step 6: Final answer
   x = 2,571.56