Finding the Fourth Proportional to 30,651.21, 42,299.91 and 17,222.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,651.21 : 42,299.91 = 17,222.42 : x
2. Step 2: Convert to fraction form
   30,651.21/42,299.91 = 17,222.42/x
3. Step 3: Cross multiply
   30,651.21x = 42,299.91 × 17,222.42
4. Step 4: Simplify right side
   30,651.21x = 728,506,815.98
5. Step 5: Solve for x
   x = 728,506,815.98/30,651.21
6. Step 6: Final answer
   x = 23,767.64