Finding the Fourth Proportional to 12,271.42, 18,409.56 and 4,479.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,271.42 : 18,409.56 = 4,479.22 : x
2. Step 2: Convert to fraction form
   12,271.42/18,409.56 = 4,479.22/x
3. Step 3: Cross multiply
   12,271.42x = 18,409.56 × 4,479.22
4. Step 4: Simplify right side
   12,271.42x = 82,460,469.34
5. Step 5: Solve for x
   x = 82,460,469.34/12,271.42
6. Step 6: Final answer
   x = 6,719.72