Finding the Fourth Proportional to 10,189.74, 15,284.66 and 3,616.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,189.74 : 15,284.66 = 3,616.12 : x
2. Step 2: Convert to fraction form
   10,189.74/15,284.66 = 3,616.12/x
3. Step 3: Cross multiply
   10,189.74x = 15,284.66 × 3,616.12
4. Step 4: Simplify right side
   10,189.74x = 55,271,164.72
5. Step 5: Solve for x
   x = 55,271,164.72/10,189.74
6. Step 6: Final answer
   x = 5,424.20