Finding the Fourth Proportional to 12,005.48, 18,010.89 and 4,609.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,005.48 : 18,010.89 = 4,609.96 : x
2. Step 2: Convert to fraction form
   12,005.48/18,010.89 = 4,609.96/x
3. Step 3: Cross multiply
   12,005.48x = 18,010.89 × 4,609.96
4. Step 4: Simplify right side
   12,005.48x = 83,029,437.44
5. Step 5: Solve for x
   x = 83,029,437.44/12,005.48
6. Step 6: Final answer
   x = 6,915.96