Finding the Fourth Proportional to 10,641.31, 15,964.02 and 3,621.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,641.31 : 15,964.02 = 3,621.04 : x
2. Step 2: Convert to fraction form
   10,641.31/15,964.02 = 3,621.04/x
3. Step 3: Cross multiply
   10,641.31x = 15,964.02 × 3,621.04
4. Step 4: Simplify right side
   10,641.31x = 57,806,354.98
5. Step 5: Solve for x
   x = 57,806,354.98/10,641.31
6. Step 6: Final answer
   x = 5,432.26