Finding the Fourth Proportional to 22,257.59, 30,715.43 and 12,321.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,257.59 : 30,715.43 = 12,321.59 : x
2. Step 2: Convert to fraction form
   22,257.59/30,715.43 = 12,321.59/x
3. Step 3: Cross multiply
   22,257.59x = 30,715.43 × 12,321.59
4. Step 4: Simplify right side
   22,257.59x = 378,462,719.95
5. Step 5: Solve for x
   x = 378,462,719.95/22,257.59
6. Step 6: Final answer
   x = 17,003.76