Finding the Fourth Proportional to 17,222.21, 25,830.72 and 8,214.05

Step by Step Solution

1. Step 1: Write the proportion equation
   17,222.21 : 25,830.72 = 8,214.05 : x
2. Step 2: Convert to fraction form
   17,222.21/25,830.72 = 8,214.05/x
3. Step 3: Cross multiply
   17,222.21x = 25,830.72 × 8,214.05
4. Step 4: Simplify right side
   17,222.21x = 212,174,696.46
5. Step 5: Solve for x
   x = 212,174,696.46/17,222.21
6. Step 6: Final answer
   x = 12,319.83