Finding the Fourth Proportional to 22,989.36, 31,725.18 and 12,917.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,989.36 : 31,725.18 = 12,917.82 : x
2. Step 2: Convert to fraction form
   22,989.36/31,725.18 = 12,917.82/x
3. Step 3: Cross multiply
   22,989.36x = 31,725.18 × 12,917.82
4. Step 4: Simplify right side
   22,989.36x = 409,820,164.71
5. Step 5: Solve for x
   x = 409,820,164.71/22,989.36
6. Step 6: Final answer
   x = 17,826.51