Finding the Fourth Proportional to 22,315.76, 30,795.49 and 12,884.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,315.76 : 30,795.49 = 12,884.12 : x
2. Step 2: Convert to fraction form
   22,315.76/30,795.49 = 12,884.12/x
3. Step 3: Cross multiply
   22,315.76x = 30,795.49 × 12,884.12
4. Step 4: Simplify right side
   22,315.76x = 396,772,788.62
5. Step 5: Solve for x
   x = 396,772,788.62/22,315.76
6. Step 6: Final answer
   x = 17,779.94