Finding the Fourth Proportional to 12,479.56, 18,722.22 and 3,714.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,479.56 : 18,722.22 = 3,714.28 : x
2. Step 2: Convert to fraction form
   12,479.56/18,722.22 = 3,714.28/x
3. Step 3: Cross multiply
   12,479.56x = 18,722.22 × 3,714.28
4. Step 4: Simplify right side
   12,479.56x = 69,539,567.30
5. Step 5: Solve for x
   x = 69,539,567.30/12,479.56
6. Step 6: Final answer
   x = 5,572.28