def convert_string_to_float(data):
    """
    Function to convert string to float.

    Args:
        data (str): String that needs to be converted to float.

    Returns:
        float: Converted float value.
    """
    try:
        return float(data)
    except ValueError:
        return None

# Example usage
data = '4235.89001196408'
print(convert_string_to_float(data))