Finding the Fourth Proportional to 10,196.63, 15,290.40 and 3,621.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,196.63 : 15,290.40 = 3,621.05 : x
2. Step 2: Convert to fraction form
   10,196.63/15,290.40 = 3,621.05/x
3. Step 3: Cross multiply
   10,196.63x = 15,290.40 × 3,621.05
4. Step 4: Simplify right side
   10,196.63x = 55,367,302.92
5. Step 5: Solve for x
   x = 55,367,302.92/10,196.63
6. Step 6: Final answer
   x = 5,429.96