Finding the Fourth Proportional to 12,225.72, 18,341.04 and 3,905.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,225.72 : 18,341.04 = 3,905.48 : x
2. Step 2: Convert to fraction form
   12,225.72/18,341.04 = 3,905.48/x
3. Step 3: Cross multiply
   12,225.72x = 18,341.04 × 3,905.48
4. Step 4: Simplify right side
   12,225.72x = 71,630,564.90
5. Step 5: Solve for x
   x = 71,630,564.90/12,225.72
6. Step 6: Final answer
   x = 5,859.01