Finding the Fourth Proportional to 10,323.72, 15,485.55 and 2,928.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,323.72 : 15,485.55 = 2,928.18 : x
2. Step 2: Convert to fraction form
   10,323.72/15,485.55 = 2,928.18/x
3. Step 3: Cross multiply
   10,323.72x = 15,485.55 × 2,928.18
4. Step 4: Simplify right side
   10,323.72x = 45,344,477.80
5. Step 5: Solve for x
   x = 45,344,477.80/10,323.72
6. Step 6: Final answer
   x = 4,392.26