Finding the Fourth Proportional to 12,006.53, 18,007.72 and 3,239.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,006.53 : 18,007.72 = 3,239.39 : x
2. Step 2: Convert to fraction form
   12,006.53/18,007.72 = 3,239.39/x
3. Step 3: Cross multiply
   12,006.53x = 18,007.72 × 3,239.39
4. Step 4: Simplify right side
   12,006.53x = 58,334,065.01
5. Step 5: Solve for x
   x = 58,334,065.01/12,006.53
6. Step 6: Final answer
   x = 4,858.53