Finding the Fourth Proportional to 19,128.96, 26,399.52 and 10,746.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,128.96 : 26,399.52 = 10,746.72 : x
2. Step 2: Convert to fraction form
   19,128.96/26,399.52 = 10,746.72/x
3. Step 3: Cross multiply
   19,128.96x = 26,399.52 × 10,746.72
4. Step 4: Simplify right side
   19,128.96x = 283,708,249.57
5. Step 5: Solve for x
   x = 283,708,249.57/19,128.96
6. Step 6: Final answer
   x = 14,831.35