Finding the Fourth Proportional to 12,039.89, 18,053.13 and 3,717.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,039.89 : 18,053.13 = 3,717.55 : x
2. Step 2: Convert to fraction form
   12,039.89/18,053.13 = 3,717.55/x
3. Step 3: Cross multiply
   12,039.89x = 18,053.13 × 3,717.55
4. Step 4: Simplify right side
   12,039.89x = 67,113,323.17
5. Step 5: Solve for x
   x = 67,113,323.17/12,039.89
6. Step 6: Final answer
   x = 5,574.25