Finding the Fourth Proportional to 23,174.42, 31,978.31 and 14,222.30

Step by Step Solution

1. Step 1: Write the proportion equation
   23,174.42 : 31,978.31 = 14,222.30 : x
2. Step 2: Convert to fraction form
   23,174.42/31,978.31 = 14,222.30/x
3. Step 3: Cross multiply
   23,174.42x = 31,978.31 × 14,222.30
4. Step 4: Simplify right side
   23,174.42x = 454,804,887.31
5. Step 5: Solve for x
   x = 454,804,887.31/23,174.42
6. Step 6: Final answer
   x = 19,625.30