Finding the Fourth Proportional to 25,429.84, 38,166.72 and 17,644.12

Step by Step Solution

1. Step 1: Write the proportion equation
   25,429.84 : 38,166.72 = 17,644.12 : x
2. Step 2: Convert to fraction form
   25,429.84/38,166.72 = 17,644.12/x
3. Step 3: Cross multiply
   25,429.84x = 38,166.72 × 17,644.12
4. Step 4: Simplify right side
   25,429.84x = 673,418,187.69
5. Step 5: Solve for x
   x = 673,418,187.69/25,429.84
6. Step 6: Final answer
   x = 26,481.42