Finding the Fourth Proportional to 5,714.50, 7,886.31 and 3,196.67

Step by Step Solution

1. Step 1: Write the proportion equation
   5,714.50 : 7,886.31 = 3,196.67 : x
2. Step 2: Convert to fraction form
   5,714.50/7,886.31 = 3,196.67/x
3. Step 3: Cross multiply
   5,714.50x = 7,886.31 × 3,196.67
4. Step 4: Simplify right side
   5,714.50x = 25,209,897.15
5. Step 5: Solve for x
   x = 25,209,897.15/5,714.50
6. Step 6: Final answer
   x = 4,411.57