Finding the Fourth Proportional to 5,714.72, 7,886.40 and 3,196.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,714.72 : 7,886.40 = 3,196.96 : x
2. Step 2: Convert to fraction form
   5,714.72/7,886.40 = 3,196.96/x
3. Step 3: Cross multiply
   5,714.72x = 7,886.40 × 3,196.96
4. Step 4: Simplify right side
   5,714.72x = 25,212,505.34
5. Step 5: Solve for x
   x = 25,212,505.34/5,714.72
6. Step 6: Final answer
   x = 4,411.85