Finding the Fourth Proportional to 19,635.56, 29,231.24 and 19,518.78

Step by Step Solution

1. Step 1: Write the proportion equation
   19,635.56 : 29,231.24 = 19,518.78 : x
2. Step 2: Convert to fraction form
   19,635.56/29,231.24 = 19,518.78/x
3. Step 3: Cross multiply
   19,635.56x = 29,231.24 × 19,518.78
4. Step 4: Simplify right side
   19,635.56x = 570,558,142.69
5. Step 5: Solve for x
   x = 570,558,142.69/19,635.56
6. Step 6: Final answer
   x = 29,057.39