Finding the Fourth Proportional to 19,964.72, 29,966.90 and 10,604.82

Step by Step Solution

1. Step 1: Write the proportion equation
   19,964.72 : 29,966.90 = 10,604.82 : x
2. Step 2: Convert to fraction form
   19,964.72/29,966.90 = 10,604.82/x
3. Step 3: Cross multiply
   19,964.72x = 29,966.90 × 10,604.82
4. Step 4: Simplify right side
   19,964.72x = 317,793,527.43
5. Step 5: Solve for x
   x = 317,793,527.43/19,964.72
6. Step 6: Final answer
   x = 15,917.76