Finding the Fourth Proportional to 19,019.60, 26,244.72 and 10,520.54

Step by Step Solution

1. Step 1: Write the proportion equation
   19,019.60 : 26,244.72 = 10,520.54 : x
2. Step 2: Convert to fraction form
   19,019.60/26,244.72 = 10,520.54/x
3. Step 3: Cross multiply
   19,019.60x = 26,244.72 × 10,520.54
4. Step 4: Simplify right side
   19,019.60x = 276,108,626.55
5. Step 5: Solve for x
   x = 276,108,626.55/19,019.60
6. Step 6: Final answer
   x = 14,517.06