Finding the Fourth Proportional to 23,076.81, 34,629.79 and 13,235.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,076.81 : 34,629.79 = 13,235.31 : x
2. Step 2: Convert to fraction form
   23,076.81/34,629.79 = 13,235.31/x
3. Step 3: Cross multiply
   23,076.81x = 34,629.79 × 13,235.31
4. Step 4: Simplify right side
   23,076.81x = 458,336,005.88
5. Step 5: Solve for x
   x = 458,336,005.88/23,076.81
6. Step 6: Final answer
   x = 19,861.32