Finding the Fourth Proportional to 21,182, 29,231.88 and 13,742.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,182 : 29,231.88 = 13,742.96 : x
2. Step 2: Convert to fraction form
   21,182/29,231.88 = 13,742.96/x
3. Step 3: Cross multiply
   21,182x = 29,231.88 × 13,742.96
4. Step 4: Simplify right side
   21,182x = 401,732,557.56
5. Step 5: Solve for x
   x = 401,732,557.56/21,182
6. Step 6: Final answer
   x = 18,965.75