Finding the Fourth Proportional to 12,258.92, 18,385.34 and 3,493.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,258.92 : 18,385.34 = 3,493.91 : x
2. Step 2: Convert to fraction form
   12,258.92/18,385.34 = 3,493.91/x
3. Step 3: Cross multiply
   12,258.92x = 18,385.34 × 3,493.91
4. Step 4: Simplify right side
   12,258.92x = 64,236,613.88
5. Step 5: Solve for x
   x = 64,236,613.88/12,258.92
6. Step 6: Final answer
   x = 5,239.99