Finding the Fourth Proportional to 12,289.54, 18,435.27 and 4,498.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,289.54 : 18,435.27 = 4,498.18 : x
2. Step 2: Convert to fraction form
   12,289.54/18,435.27 = 4,498.18/x
3. Step 3: Cross multiply
   12,289.54x = 18,435.27 × 4,498.18
4. Step 4: Simplify right side
   12,289.54x = 82,925,162.81
5. Step 5: Solve for x
   x = 82,925,162.81/12,289.54
6. Step 6: Final answer
   x = 6,747.62