Finding the Fourth Proportional to 22,256.58, 30,715.83 and 12,828.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,256.58 : 30,715.83 = 12,828.18 : x
2. Step 2: Convert to fraction form
   22,256.58/30,715.83 = 12,828.18/x
3. Step 3: Cross multiply
   22,256.58x = 30,715.83 × 12,828.18
4. Step 4: Simplify right side
   22,256.58x = 394,028,196.09
5. Step 5: Solve for x
   x = 394,028,196.09/22,256.58
6. Step 6: Final answer
   x = 17,703.90