Finding the Fourth Proportional to 23,088.16, 31,863.20 and 12,879.84

Step by Step Solution

1. Step 1: Write the proportion equation
   23,088.16 : 31,863.20 = 12,879.84 : x
2. Step 2: Convert to fraction form
   23,088.16/31,863.20 = 12,879.84/x
3. Step 3: Cross multiply
   23,088.16x = 31,863.20 × 12,879.84
4. Step 4: Simplify right side
   23,088.16x = 410,392,917.89
5. Step 5: Solve for x
   x = 410,392,917.89/23,088.16
6. Step 6: Final answer
   x = 17,775.04