Finding the Fourth Proportional to 36,684.50, 55,017.63 and 10,389.47

Step by Step Solution

1. Step 1: Write the proportion equation
   36,684.50 : 55,017.63 = 10,389.47 : x
2. Step 2: Convert to fraction form
   36,684.50/55,017.63 = 10,389.47/x
3. Step 3: Cross multiply
   36,684.50x = 55,017.63 × 10,389.47
4. Step 4: Simplify right side
   36,684.50x = 571,603,741.27
5. Step 5: Solve for x
   x = 571,603,741.27/36,684.50
6. Step 6: Final answer
   x = 15,581.62