Finding the Fourth Proportional to 22,384.10, 30,886.68 and 12,822.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,384.10 : 30,886.68 = 12,822.50 : x
2. Step 2: Convert to fraction form
   22,384.10/30,886.68 = 12,822.50/x
3. Step 3: Cross multiply
   22,384.10x = 30,886.68 × 12,822.50
4. Step 4: Simplify right side
   22,384.10x = 396,044,454.30
5. Step 5: Solve for x
   x = 396,044,454.30/22,384.10
6. Step 6: Final answer
   x = 17,693.11