Finding the Fourth Proportional to 10,276.69, 15,405.78 and 3,698.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,276.69 : 15,405.78 = 3,698.25 : x
2. Step 2: Convert to fraction form
   10,276.69/15,405.78 = 3,698.25/x
3. Step 3: Cross multiply
   10,276.69x = 15,405.78 × 3,698.25
4. Step 4: Simplify right side
   10,276.69x = 56,974,425.89
5. Step 5: Solve for x
   x = 56,974,425.89/10,276.69
6. Step 6: Final answer
   x = 5,544.05