Finding the Fourth Proportional to 10,490.08, 15,725.40 and 3,559.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,490.08 : 15,725.40 = 3,559.72 : x
2. Step 2: Convert to fraction form
   10,490.08/15,725.40 = 3,559.72/x
3. Step 3: Cross multiply
   10,490.08x = 15,725.40 × 3,559.72
4. Step 4: Simplify right side
   10,490.08x = 55,978,020.89
5. Step 5: Solve for x
   x = 55,978,020.89/10,490.08
6. Step 6: Final answer
   x = 5,336.28