Finding the Fourth Proportional to 10,185.20, 15,272.76 and 3,258.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,185.20 : 15,272.76 = 3,258.80 : x
2. Step 2: Convert to fraction form
   10,185.20/15,272.76 = 3,258.80/x
3. Step 3: Cross multiply
   10,185.20x = 15,272.76 × 3,258.80
4. Step 4: Simplify right side
   10,185.20x = 49,770,870.29
5. Step 5: Solve for x
   x = 49,770,870.29/10,185.20
6. Step 6: Final answer
   x = 4,886.59