Finding the Fourth Proportional to 12,019.53, 18,030.32 and 3,136.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,019.53 : 18,030.32 = 3,136.04 : x
2. Step 2: Convert to fraction form
   12,019.53/18,030.32 = 3,136.04/x
3. Step 3: Cross multiply
   12,019.53x = 18,030.32 × 3,136.04
4. Step 4: Simplify right side
   12,019.53x = 56,543,804.73
5. Step 5: Solve for x
   x = 56,543,804.73/12,019.53
6. Step 6: Final answer
   x = 4,704.33