Finding the Fourth Proportional to 10,641.81, 15,964.77 and 3,621.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,641.81 : 15,964.77 = 3,621.54 : x
2. Step 2: Convert to fraction form
   10,641.81/15,964.77 = 3,621.54/x
3. Step 3: Cross multiply
   10,641.81x = 15,964.77 × 3,621.54
4. Step 4: Simplify right side
   10,641.81x = 57,817,053.15
5. Step 5: Solve for x
   x = 57,817,053.15/10,641.81
6. Step 6: Final answer
   x = 5,433.01