Finding the Fourth Proportional to 21,174.25, 31,767.95 and 12,750.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,174.25 : 31,767.95 = 12,750.02 : x
2. Step 2: Convert to fraction form
   21,174.25/31,767.95 = 12,750.02/x
3. Step 3: Cross multiply
   21,174.25x = 31,767.95 × 12,750.02
4. Step 4: Simplify right side
   21,174.25x = 405,042,109.15
5. Step 5: Solve for x
   x = 405,042,109.15/21,174.25
6. Step 6: Final answer
   x = 19,129.00