Finding the Fourth Proportional to 19,601.29, 29,406.89 and 8,505.28

Step by Step Solution

1. Step 1: Write the proportion equation
   19,601.29 : 29,406.89 = 8,505.28 : x
2. Step 2: Convert to fraction form
   19,601.29/29,406.89 = 8,505.28/x
3. Step 3: Cross multiply
   19,601.29x = 29,406.89 × 8,505.28
4. Step 4: Simplify right side
   19,601.29x = 250,113,833.38
5. Step 5: Solve for x
   x = 250,113,833.38/19,601.29
6. Step 6: Final answer
   x = 12,760.07