Finding the Fourth Proportional to 10,485, 15,729.93 and 3,559.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,485 : 15,729.93 = 3,559.50 : x
2. Step 2: Convert to fraction form
   10,485/15,729.93 = 3,559.50/x
3. Step 3: Cross multiply
   10,485x = 15,729.93 × 3,559.50
4. Step 4: Simplify right side
   10,485x = 55,990,685.84
5. Step 5: Solve for x
   x = 55,990,685.84/10,485
6. Step 6: Final answer
   x = 5,340.07