Finding the Fourth Proportional to 19,654.22, 29,460.56 and 13,398.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,654.22 : 29,460.56 = 13,398.72 : x
2. Step 2: Convert to fraction form
   19,654.22/29,460.56 = 13,398.72/x
3. Step 3: Cross multiply
   19,654.22x = 29,460.56 × 13,398.72
4. Step 4: Simplify right side
   19,654.22x = 394,733,692.38
5. Step 5: Solve for x
   x = 394,733,692.38/19,654.22
6. Step 6: Final answer
   x = 20,083.92