Finding the Fourth Proportional to 22,315.56, 30,795.48 and 12,884.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,315.56 : 30,795.48 = 12,884.12 : x
2. Step 2: Convert to fraction form
   22,315.56/30,795.48 = 12,884.12/x
3. Step 3: Cross multiply
   22,315.56x = 30,795.48 × 12,884.12
4. Step 4: Simplify right side
   22,315.56x = 396,772,659.78
5. Step 5: Solve for x
   x = 396,772,659.78/22,315.56
6. Step 6: Final answer
   x = 17,780.09