Finding the Fourth Proportional to 21,051.36, 29,061.42 and 13,096.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,051.36 : 29,061.42 = 13,096.14 : x
2. Step 2: Convert to fraction form
   21,051.36/29,061.42 = 13,096.14/x
3. Step 3: Cross multiply
   21,051.36x = 29,061.42 × 13,096.14
4. Step 4: Simplify right side
   21,051.36x = 380,592,424.92
5. Step 5: Solve for x
   x = 380,592,424.92/21,051.36
6. Step 6: Final answer
   x = 18,079.23