Finding the Fourth Proportional to 12,245.40, 18,367.98 and 3,479.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,245.40 : 18,367.98 = 3,479.16 : x
2. Step 2: Convert to fraction form
   12,245.40/18,367.98 = 3,479.16/x
3. Step 3: Cross multiply
   12,245.40x = 18,367.98 × 3,479.16
4. Step 4: Simplify right side
   12,245.40x = 63,905,141.30
5. Step 5: Solve for x
   x = 63,905,141.30/12,245.40
6. Step 6: Final answer
   x = 5,218.71