Finding the Fourth Proportional to 22,529.88, 31,091.86 and 12,321.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,529.88 : 31,091.86 = 12,321.40 : x
2. Step 2: Convert to fraction form
   22,529.88/31,091.86 = 12,321.40/x
3. Step 3: Cross multiply
   22,529.88x = 31,091.86 × 12,321.40
4. Step 4: Simplify right side
   22,529.88x = 383,095,243.80
5. Step 5: Solve for x
   x = 383,095,243.80/22,529.88
6. Step 6: Final answer
   x = 17,003.87