Finding the Fourth Proportional to 37,144.81, 55,724.15 and 12,192.00

Step by Step Solution

1. Step 1: Write the proportion equation
   37,144.81 : 55,724.15 = 12,192.00 : x
2. Step 2: Convert to fraction form
   37,144.81/55,724.15 = 12,192.00/x
3. Step 3: Cross multiply
   37,144.81x = 55,724.15 × 12,192.00
4. Step 4: Simplify right side
   37,144.81x = 679,388,971.76
5. Step 5: Solve for x
   x = 679,388,971.76/37,144.81
6. Step 6: Final answer
   x = 18,290.28