Finding the Fourth Proportional to 11,823.49, 17,736.09 and 3,389.87

Step by Step Solution

1. Step 1: Write the proportion equation
   11,823.49 : 17,736.09 = 3,389.87 : x
2. Step 2: Convert to fraction form
   11,823.49/17,736.09 = 3,389.87/x
3. Step 3: Cross multiply
   11,823.49x = 17,736.09 × 3,389.87
4. Step 4: Simplify right side
   11,823.49x = 60,123,039.41
5. Step 5: Solve for x
   x = 60,123,039.41/11,823.49
6. Step 6: Final answer
   x = 5,085.05