Finding the Fourth Proportional to 22,385.10, 30,888.06 and 12,823.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,385.10 : 30,888.06 = 12,823.50 : x
2. Step 2: Convert to fraction form
   22,385.10/30,888.06 = 12,823.50/x
3. Step 3: Cross multiply
   22,385.10x = 30,888.06 × 12,823.50
4. Step 4: Simplify right side
   22,385.10x = 396,093,037.41
5. Step 5: Solve for x
   x = 396,093,037.41/22,385.10
6. Step 6: Final answer
   x = 17,694.49